CVE-2026-54231: A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport

Routine

MEDIUM 5.5WATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2026-54231 is a medium-severity flaw (CVSS 5.5) affecting automatic bug reporting tool, fedora, enterprise linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 wr

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 92%)
CISA exploited list	No
Weakness	CWE-74
Published	2026-06-13
Last modified	2026-09-21

Publisher (CNA): Red Hat, Inc. · Vendor: fedoraproject · redhat

Last updated 2026-09-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-13 03:16 UTCPublished CVE record published
2026-09-21 06:17 UTCUpdated Record last modified

redhat automatic bug reporting tool MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy automatic-bug-reporting-tool || rpm -q automatic-bug-reporting-tool || automatic-bug-reporting-tool --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

fedoraproject fedora MITIGATE

Affected: 43 · 44

Fixed in: no fixed release known

Safe to downgrade to: a release before 43

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

redhat enterprise linux MITIGATE

Affected: 7.0 · 8.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54231?

automatic bug reporting tool: mitigate or apply the listed mitigation; fedora: mitigate or apply the listed mitigation; enterprise linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-54231 being exploited?

CVE-2026-54231 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54231 affect?

CVE-2026-54231 affects automatic bug reporting tool, fedora, enterprise linux. Severity is medium (CVSS 5.5). 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 di

How urgent is CVE-2026-54231?

Priority 26/100. On your watchlist

Related CVEs

CVE-2026-54230 HIGH 7.0 MITIGATE MITIGATE A symlink following vulnerability was found in the ABRT post-create event handler scripts in libreport
CVE-2015-5287 HIGH 7.8 EXPLOITED UPGRADE MITIGATE Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability

References

← Back to latest CVEs