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FedoraOperating system · Fedoraproject

CVE-2026-54231

MEDIUM · 5.5 CVSS v3.1 Published 2026-06-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A content injection vulnerability exists in ABRT's post-create event handler scripts in libreport. The event script queries the systemd journal for log entries matching crashed processes and writes results to dump directory files without sanitizing embedded control characters. A local attacker can inject arbitrary content by embedding newline characters in syslog messages, influencing what root writes to dump directory files.

MitigationImplement sanitization of control characters (especially newlines) in journal output before writing to dump directory files, or validate syslog message input in the event handler script.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
FedoraOperating system
Affected:= 43= 44
Enterprise LinuxOperating system
Affected:= 7.0= 8.0
AbrtApplication
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check if ABRT or libreport packages are installed
    Run 'rpm -qa | grep -E "(abrt|libreport)"' or 'dnf list installed | grep -E "(abrt|libreport)"' to list installed packages
    Affected if Either abrt or libreport packages are present on the system
  2. Identify installed libreport version
    Run 'rpm -q libreport' or 'rpm -qi libreport' to get the exact version number
    Affected if The version matches Fedora 43/44, RHEL 7.0/8.0, or is any version of the Abrt Project Abrt package
  3. Verify systemd journal integration is enabled in ABRT
    Check ABRT configuration files in /etc/abrt/plugins/ or /etc/libreport/plugins/ for journal.conf or similar, and look for settings that enable journal querying
    Affected if Systemd journal plugin (journal) is enabled in ABRT configuration
  4. Confirm post-create event handler configuration
    Examine /etc/abrt/events/ or /etc/libreport/events/ for post-create event handlers that process systemd journal output, and check if they are enabled
    Affected if A post-create event handler exists and is active that writes journal output to dump directories
  5. Inspect dump directory settings
    Check ABRT configuration in /etc/abrt/abrt.conf or /etc/libreport/libreport.conf for DumpDir location and confirm directories are writable
    Affected if Dump directories are configured and accessible to the ABRT service

The system is affected if libreport or abrt packages are installed with versions matching Fedora 43/44, RHEL 7.0/8.0, or any Abrt Project version, and the systemd journal integration with post-create event handlers is enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement sanitization of control characters (especially newlines) in journal output before writing to dump directory files, or validate syslog message input in the event handler script.

Fix this in Fedora Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-54231 in production — separate from our analysis above.

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What this is

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What belongs here
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