A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport. The event script queries the systemd journal for log entries matching the crashed process and writes the results to files in the dump directory without sanitizing embedded control characters. A local user can inject arbitrary content into the journal output by embedding newline characters in syslog messages, controlling the content that root writes to dump directory files.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1725:01 advisory.

    * abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories     (CVE-2026-54228)
      * abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking     (CVE-2026-54229)
      * abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file     overwrites (CVE-2026-54230)
      * abrt: unsanitized systemd journal content written to dump directory files enables content injection     (CVE-2026-54231)

Tenable has extracted the preceding description block directly from the MiracleLinux 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 Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2026:0262 advisory.

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

    CVE-2026-54228:
    A time-of-check time-of-use (TOCTOU) race condition was found in the abrt-dbus D-Bus service's SetElement     method. Between dump directory creation and post-create event execution, any local user can call     SetElement to write arbitrary text files into the root-owned dump directory, bypassing package validation     and allowing crashes of unpackaged binaries to survive post-create processing.

    CVE-2026-54229:
    A race condition was found in the abrt-dbus D-Bus service's ChownProblemDir method. ChownProblemDir opens     the dump directory with DD_OPEN_READONLY and calls dd_chown to change ownership of all files to the     caller's uid, succeeding even while post-create event handlers hold a write lock. This allows an attacker     to gain filesystem-level control of the dump directory while privileged event scripts are still running.

    CVE-2026-54230:
    A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport.
    Event scripts write output files using shell redirections without the O_NOFOLLOW flag. If the target file     is replaced with a symlink, the shell process running as root follows the symlink and writes content to     the symlink target, allowing arbitrary file overwrites on the system.

    CVE-2026-54231:
    A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport.
    The event script queries the systemd journal for log entries matching the crashed process and writes the     results to files in the dump directory without sanitizing embedded control characters. A local user can     inject arbitrary content into the journal output by embedding newline characters in syslog messages,     controlling the content that root writes to dump directory files.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104826 advisory.

    A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport.
    The event script queries the systemd journal for log entries matching the crashed process and writes the     results to files in the dump directory without sanitizing embedded control characters. A local user can     inject arbitrary content into the journal output by embedding newline characters in syslog messages,     controlling the content that root writes to dump directory files.

Tenable has extracted the preceding description block directly from the Unity 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 packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-54272 advisory.

    - Resolves: CVE-2026-54229
    - Resolves: CVE-2026-54228
    - Resolves: CVE-2026-54231
    - Resolves: CVE-2026-54230

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:54272 advisory.

    * abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories     (CVE-2026-54228)

    * abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking     (CVE-2026-54229)

    * abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file     overwrites (CVE-2026-54230)

    * abrt: unsanitized systemd journal content written to dump directory files enables content injection     (CVE-2026-54231)

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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:54272 advisory.

    * abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories     (CVE-2026-54228)
      * abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking     (CVE-2026-54229)
      * abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file     overwrites (CVE-2026-54230)
      * abrt: unsanitized systemd journal content written to dump directory files enables content injection     (CVE-2026-54231)

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:54272 advisory.

    The Automatic Bug Reporting Tool (ABRT) recognizes defects in applications and creates bug reports that     help maintainers fix the defects. ABRT uses a plug-in system to extend its functionality.

    Security Fix(es):

    * abrt: TOCTOU race condition in abrt-dbus SetElement allows arbitrary file writes to dump directories     (CVE-2026-54228)

    * abrt: ChownProblemDir succeeds during active post-create event processing due to inadequate locking     (CVE-2026-54229)

    * abrt: event handler scripts follow symlinks when writing output files, allowing arbitrary file     overwrites (CVE-2026-54230)

    * abrt: unsanitized systemd journal content written to dump directory files enables content injection     (CVE-2026-54231)

    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 Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-cccf5985b5 advisory.

    Update to 2.17.9

    * Resolves: #2484614
    * Resolves: CVE-2026-54230
    * Resolves: CVE-2026-54231
    * Resolves: CVE-2026-54228
    * Resolves: CVE-2026-54229


Tenable has extracted the preceding description block directly from the Fedora 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 Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a7417466a1 advisory.

    Update to 2.17.9

    * Resolves: rhbz#2484614
    * Resolves: CVE-2026-54230
    * Resolves: CVE-2026-54231
    * Resolves: CVE-2026-54228
    * Resolves: CVE-2026-54229

Tenable has extracted the preceding description block directly from the Fedora 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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport.
    The event script queries the systemd journal for log entries matching the crashed process and writes the     results to files in the dump directory without sanitizing embedded control characters. A local user can     inject arbitrary content into the journal output by embedding newline characters in syslog messages,     controlling the content that root writes to dump directory files. (CVE-2026-54231)

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

ID	Name	Product	Family	Type	Severity
342222	MiracleLinux 8 : abrt-2.10.9-26.el8_10.ML.1 (AXSA:2026-1725:01)	Nessus	Miracle Linux Local Security Checks	Local	high
342088	Alibaba Cloud Linux 3 : 0262: abrt (ALINUX3-SA-2026:0262)	Nessus	Alibaba Cloud Linux Local Security Checks	Local	high
340913	Unity Linux 20.1060a / 20.1070a Security Update: abrt (UTSA-2026-104826)	Nessus	Unity Linux Local Security Checks	Local	medium
340689	Oracle Linux 8 : abrt (ELSA-2026-54272)	Nessus	Oracle Linux Local Security Checks	Local	high
335118	RockyLinux 8 : abrt (RLSA-2026:54272)	Nessus	Rocky Linux Local Security Checks	Local	high
334949	AlmaLinux 8 : abrt (ALSA-2026:54272)	Nessus	Alma Linux Local Security Checks	Local	high
334918	RHEL 8 : abrt (RHSA-2026:54272)	Nessus	Red Hat Local Security Checks	Local	high
333257	Fedora 43 : abrt (2026-cccf5985b5)	Nessus	Fedora Local Security Checks	Local	high
332080	Fedora 44 : abrt (2026-a7417466a1)	Nessus	Fedora Local Security Checks	Local	high
320967	Linux Distros Unpatched Vulnerability : CVE-2026-54231	Nessus	Misc.	Local	medium

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