Vulnerability in Apache Software Foundation Apache CXF

[ Description ]Official description

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic find-then-delete operation against a shared relational database under READ_COMMITTED isolation. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fixes this issue.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund8 Oct 2026WID-SEC-2026-3824

  Apache CXF: Multiple vulnerabilities Translated from German

  CVE-2026-78384CVE-2026-97791CVE-2026-108039+7 more CVEs

[ References ]References

• lists.apache.org/thread.html/6msbm601o6ogfgdzdbtbrmgspmz50nxkIssue TrackingVendor Advisory
• www.openwall.com/lists/oss-security/2026/10/09/5Mailing ListThird Party Advisory