HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the destination SV.

The remote SUSE Linux SLES16 / SLES_SAP16 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:22189-1 advisory.

    This update for perl-HTML-Parser fixes the following issue

    - CVE-2026-8829: HTML:Entities versions before 3.84 for Perl read freed heap memory in _decode_entities     (bsc#1267606).

Tenable has extracted the preceding description block directly from the SUSE 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 version of perl-HTML-Parser installed on the remote host is prior to 3.71-4. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3357 advisory.

    HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.

    The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV     returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash,     and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the     SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop     read repl_len bytes from the freed allocation.

    The read may disclose adjacent heap contents into the destination SV. (CVE-2026-8829)

Tenable has extracted the preceding description block directly from the tested product 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 a vulnerability as referenced in the ALAS2023-2026-1836 advisory.

    HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities.

    The XS routine backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV     returned by hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash,     and that value contained its own key as an entity reference, a later call to grow_gap() reallocated the     SV's PV buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop     read repl_len bytes from the freed allocation.

    The read may disclose adjacent heap contents into the destination SV. (CVE-2026-8829)

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

  - HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities. The XS routine     backing HTML::Entities::_decode_entities cached a pointer (repl) into the entity-value SV returned by     hv_fetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and that     value contained its own key as an entity reference, a later call to grow_gap() reallocated the SV's PV     buffer and freed the backing allocation that repl still pointed into. The subsequent copy loop read     repl_len bytes from the freed allocation. The read may disclose adjacent heap contents into the     destination SV. (CVE-2026-8829)

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

ID	Name	Product	Family	Severity
322937	SUSE SLES16 Security Update : perl-HTML-Parser (SUSE-SU-2026:22189-1)	Nessus	SuSE Local Security Checks	high
322042	Amazon Linux 2 : perl-HTML-Parser, --advisory ALAS2-2026-3357 (ALAS-2026-3357)	Nessus	Amazon Linux Local Security Checks	high
322031	Amazon Linux 2023 : perl-HTML-Parser, perl-HTML-Parser-tests (ALAS2023-2026-1836)	Nessus	Amazon Linux Local Security Checks	high
318663	Linux Distros Unpatched Vulnerability : CVE-2026-8829	Nessus	Misc.	high

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