How severe is CVE-2026-54231?

CVE-2026-54231 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-54231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54231?

CVE-2026-54231 primarily affects Redhat Enterprise Linux. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-54231?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-54231 have an EU (EUVD) identifier?

Yes. CVE-2026-54231 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36640.

When was CVE-2026-54231 published?

CVE-2026-54231 was published on 2026-06-13 and last updated on 2026-06-29.

CVE-2026-54231

CVE-2026-54231 is a medium-severity vulnerability in Redhat Enterprise Linux with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36640
Weakness: CWE-74
Affected product: Redhat Enterprise Linux
Published: 2026-06-13
Last modified: 2026-06-29

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-54231?: CVE-2026-54231 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-54231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54231?: CVE-2026-54231 primarily affects Redhat Enterprise Linux. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-54231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-54231 have an EU (EUVD) identifier?: Yes. CVE-2026-54231 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36640.
When was CVE-2026-54231 published?: CVE-2026-54231 was published on 2026-06-13 and last updated on 2026-06-29.

References

Affected products (5)

cpe:2.3:a:abrt_project:abrt:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:43:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:44:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

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