Vulnerability in Apache Software Foundation Apache Jackrabbit

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.1

[ Description ]Official description

: Session Fixation / Session Reuse across Users vulnerability in Apache Jackrabbit. Jackrabbit WebDAV server attaches a cached authenticated session on any Lock-Token/TransactionId/SubscriptionId/If-header field token match with no credential check. This issue affects Apache Jackrabbit: from 2.23.0 through 2.23.5, from 2.22.0 through 2.22.4, from 2.20.0 through 2.20.17. Users are recommended to upgrade to versions 2.23.6, 2.22.5, or 2.20.18 which fix the 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-Bund7 Oct 2026WID-SEC-2026-3816

  Apache Jackrabbit: Multiple vulnerabilities Translated from German

  CVE-2026-92415CVE-2026-92414

[ References ]References

• lists.apache.org/thread.html/gmbsmrs2lycl9nld7rd0h1r1fc4t75qrMailing ListVendor Advisory
• www.openwall.com/lists/oss-security/2026/10/07/27Mailing ListThird Party Advisory