Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the extraction directory. _make_special_file() passes the tar header's linkname to symlink() without validating it against absolute paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the symlink target. A subsequent open through the extracted name reads or writes the attacker chosen path.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0185 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2026-42496:
    Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the     extraction directory.
    _make_special_file() passes the tar header's linkname to symlink() without validating it against absolute     paths or .. segments. The secure-extract mode check that guards regular file extraction does not cover the     symlink target.
    A subsequent open through the extracted name reads or writes the attacker chosen path.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has a package installed that is affected by a vulnerability as referenced in the AXSA:2026-1104:01 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:30857 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-30851 advisory.

    - Fix CVE-2025-40909 - Clone dirhandles without fchdir

    perl-Algorithm-Diff
    - Fix CVE-2026-42496: validate symlink and hardlink targets in secure       extract mode       Resolves: RHEL-181655

    perl-Archive-Zip
    - Resolves arbitrary code execution via attacker-controlled output glob (CVE-2026-48962)       Resolves: RHEL-180421

    perl-IO-Compress-Lzma

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:30856 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:30856 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-30856 advisory.

    - Fix CVE-2026-42496: validate symlink and hardlink targets in secure       extract mode

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:30857 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:30851 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)
      * perl-IO-Compress: perl-IO-Compress: Arbitrary code execution via attacker-controlled output glob     (CVE-2026-48962)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:30857 advisory.

    Archive::Tar provides an object oriented mechanism for handling tar files.  It provides class methods for     quick and easy files handling while also allowing for the creation of tar file objects for custom     manipulation.  If you have the IO::Zlib module installed, Archive::Tar will also support compressed or     gzipped tar files.

    Security Fix(es):

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-30852 advisory.

    - Fix CVE-2026-42496: validate symlink and hardlink targets in secure       extract mode
    - Fixes CVE-2018-12015 (directory traversal) (bug #1588761)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:30852 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:30851 advisory.

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

    * perl-IO-Compress: perl-IO-Compress: Arbitrary code execution via attacker-controlled output glob     (CVE-2026-48962)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:30851 advisory.

    Perl is a high-level programming language that is commonly used for system administration utilities and     web programming.

    Security Fix(es):

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

    * perl-IO-Compress: perl-IO-Compress: Arbitrary code execution via attacker-controlled output glob     (CVE-2026-48962)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:30856 advisory.

    Archive::Tar provides an object oriented mechanism for handling tar files.  It provides class methods for     quick and easy files handling while also allowing for the creation of tar file objects for custom     manipulation.  If you have the IO::Zlib module installed, Archive::Tar will also support compressed or     gzipped tar files.

    Security Fix(es):

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:30852 advisory.

    Archive::Tar provides an object oriented mechanism for handling tar files.  It provides class methods for     quick and easy files handling while also allowing for the creation of tar file objects for custom     manipulation.  If you have the IO::Zlib module installed, Archive::Tar will also support compressed or     gzipped tar files.

    Security Fix(es):

    * perl-archive-tar: perl-archive-tar: Path traversal via crafted symlinks allows arbitrary file access     (CVE-2026-42496)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-6988e8f652 advisory.

    Fixed  CVE-2026-42496 - Path traversal via crafted symlinks allows arbitrary file access     Backported from 3.08

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1805 advisory.

    Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the     extraction directory.  _make_special_file() passes the tar header's linkname to symlink() without     validating it against absolute paths or .. segments. The secure-extract mode check that guards regular     file extraction does not cover the symlink target.  A subsequent open through the extracted name reads or     writes the attacker chosen path.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396459/ (CVE-2026-42496)

    Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the     extraction directory.  _make_special_file() passes the tar header's linkname to link() without validating     it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.  A     subsequent write through the extracted name modifies the victim file, and the post-extraction chmod,     chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's     mode, owner, and timestamps to the shared inode during extraction alone.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396457/ (CVE-2026-42497)

    Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size     field in tar header.  _read_tar() reads each entry's payload with $handle->read($$data, $block), where     $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.
    A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396448/ (CVE-2026-9538)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of perl-Archive-Tar installed on the remote host is prior to 1.92-3. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3347 advisory.

    Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the     extraction directory.  _make_special_file() passes the tar header's linkname to symlink() without     validating it against absolute paths or .. segments. The secure-extract mode check that guards regular     file extraction does not cover the symlink target.  A subsequent open through the extracted name reads or     writes the attacker chosen path.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396459/ (CVE-2026-42496)

    Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the     extraction directory.  _make_special_file() passes the tar header's linkname to link() without validating     it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.  A     subsequent write through the extracted name modifies the victim file, and the post-extraction chmod,     chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's     mode, owner, and timestamps to the shared inode during extraction alone.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396457/ (CVE-2026-42497)

    Archive::Tar versions before 3.10 for Perl allow memory exhaustion via attacker controlled entry size     field in tar header.  _read_tar() reads each entry's payload with $handle->read($$data, $block), where     $block is derived from the entry's 12-byte size field in the tar header with no upper bound on that value.
    A crafted header declaring a multi-gigabyte size causes Perl to allocate a scalar of that size.

    NOTE: https://lists.security.metacpan.org/cve-announce/msg/40396448/ (CVE-2026-9538)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2026:0424 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2026-42496:
    Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the     extraction directory. _make_special_file() passes the tar header's linkname to symlink() without     validating it against absolute paths or .. segments. The secure-extract mode check that guards regular     file extraction does not cover the symlink target. A subsequent open through the extracted name reads or     writes the attacker chosen path.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Archive::Tar versions before 3.08 for Perl extract symlinks with attacker controlled targets outside the     extraction directory. _make_special_file() passes the tar header's linkname to symlink() without     validating it against absolute paths or .. segments. The secure-extract mode check that guards regular     file extraction does not cover the symlink target. A subsequent open through the extracted name reads or     writes the attacker chosen path. (CVE-2026-42496)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
325912	Alibaba Cloud Linux 3 : 0185: perl-Archive-Tar (ALINUX3-SA-2026:0185)	Nessus	Alibaba Cloud Linux Local Security Checks	critical
325183	MiracleLinux 8 : perl-Archive-Tar-2.30-2.el8_10 (AXSA:2026-1104:01)	Nessus	Miracle Linux Local Security Checks	critical
325115	RockyLinux 10 : perl-Archive-Tar (RLSA-2026:30857)	Nessus	Rocky Linux Local Security Checks	critical
324332	Oracle Linux 8 : perl:5.32 (ELSA-2026-30851)	Nessus	Oracle Linux Local Security Checks	critical
324112	RockyLinux 9 : perl-Archive-Tar (RLSA-2026:30856)	Nessus	Rocky Linux Local Security Checks	critical
323985	AlmaLinux 9 : perl-Archive-Tar (ALSA-2026:30856)	Nessus	Alma Linux Local Security Checks	critical
323962	Oracle Linux 9 : perl-Archive-Tar (ELSA-2026-30856)	Nessus	Oracle Linux Local Security Checks	critical
323953	AlmaLinux 10 : perl-Archive-Tar (ALSA-2026:30857)	Nessus	Alma Linux Local Security Checks	critical
323952	AlmaLinux 8 : perl:5.32 (ALSA-2026:30851)	Nessus	Alma Linux Local Security Checks	critical
323864	RHEL 10 : perl-Archive-Tar (RHSA-2026:30857)	Nessus	Red Hat Local Security Checks	critical
323835	Oracle Linux 8 : perl-Archive-Tar (ELSA-2026-30852)	Nessus	Oracle Linux Local Security Checks	critical
323692	AlmaLinux 8 : perl-Archive-Tar (ALSA-2026:30852)	Nessus	Alma Linux Local Security Checks	critical
323659	RockyLinux 8 : perl:5.32 (RLSA-2026:30851)	Nessus	Rocky Linux Local Security Checks	critical
323637	RHEL 8 : perl:5.32 (RHSA-2026:30851)	Nessus	Red Hat Local Security Checks	critical
323633	RHEL 9 : perl-Archive-Tar (RHSA-2026:30856)	Nessus	Red Hat Local Security Checks	critical
323630	RHEL 8 : perl-Archive-Tar (RHSA-2026:30852)	Nessus	Red Hat Local Security Checks	critical
321633	Fedora 43 : perl-Archive-Tar (2026-6988e8f652)	Nessus	Fedora Local Security Checks	critical
319782	Amazon Linux 2023 : perl-Archive-Tar, perl-Archive-Tar-tests (ALAS2023-2026-1805)	Nessus	Amazon Linux Local Security Checks	critical
319771	Amazon Linux 2 : perl-Archive-Tar, --advisory ALAS2-2026-3347 (ALAS-2026-3347)	Nessus	Amazon Linux Local Security Checks	critical
319735	TencentOS Server 4: perl-Archive-Tar (TSSA-2026:0424)	Nessus	Tencent Local Security Checks	critical
316868	Linux Distros Unpatched Vulnerability : CVE-2026-42496	Nessus	Misc.	critical

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