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VulnerabilityPublished Updated

CVE-2026-54231: Red Hat Enterprise Linux 8 · Injection

Affects Red Hat Enterprise Linux 8Source CVE Database V5

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Not known to be exploited · CVSS 5.5 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Red Hat Enterprise Linux 8abrtAffected–Fixed in–
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportabrtAffected–Fixed in–
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnabrtAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportabrtAffected–Fixed in–
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnabrtAffected–Fixed in–
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceabrtAffected–Fixed in–

AI-suggested

Red Hat recommends disabling or removing ABRT on RHEL 8 systems if it is not required. This can be done by disabling the abrtd and related services using systemctl. Fedora users should consider using systemd-coredump instead of ABRT. Restricting local user access to systems running ABRT can also mitigate risk. A security update fixing this vulnerability is available for Red Hat Enterprise Linux 8 and should be applied promptly.

Description

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.

References

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