UnratedApache Software Foundation

Unknown [CVE-2026-50629] Apache CXF: OAuth2: Log Injection via Unsanitized Client Identifier

This security Apache Software Foundation advisory covers CVE-2026-50629 affecting Apache CXF.

CVE-2026-50629 Published Jun 12, 2026Updated by vendor Aug 7, 2026

CVE-2026-50629

Affected products & platforms

Apache Software FoundationUnclassified

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Summary

The 'clientId' parameter from incoming HTTP requests is directly concatenated into OAuth2 server log warning messages without sanitizing control characters. This allows an attacker to inject arbitrary content, including fake log entries, into the server's log files.

Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Affected product named by the advisory: Apache CXF.

Affected versions

Apache CXF 4.2.0 before 4.2.2
Apache CXF 4.0.0 before 4.1.7
Apache CXF before 3.6.12

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Fixed versions

4.2.2
4.1.7
3.6.12

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-50629 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-50629NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
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