CVE-2026-92415 PUBLISHED

Apache Jackrabbit: DavEx client runs Class.forName + (String)-constructor on server-controlled error bodies

Assigner: apache
Reserved: 16.09.2026 Published: 07.10.2026 Updated: 07.10.2026

— Use of Externally-Controlled Input to Select Classes or Code vulnerability in Apache Jackrabbit's WebDAV/Davex client.

A malicious WebDAV/DavEx server, or an attacker able to intercept the connection, can cause the client to instantiate arbitrary classes from its classpath, which can lead to arbitrary file creation or truncation.

Only applications that use jackrabbit-spi2dav (directly or through jackrabbit-jcr2dav) to connect to a remote repository are affected. Jackrabbit servers are not affected.

Category: unsafe reflection on wire data (HIGH).

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/S:N
CVSS Score: 6.9

Product Status

Vendor Apache Software Foundation
Product Apache Jackrabbit
Versions Default: unaffected
  • affected from 2.23.0 to 2.23.5 (incl.)
  • affected from 2.22.0 to 2.22.4 (incl.)
  • affected from 2.20.0 to 2.20.17 (incl.)

Credits

  • The Apache Software Foundation finder
  • Julian Reschke analyst
  • Claude Security tool

References

Problem Types

  • CWE-470 — Use of Externally-Controlled Input to Select Classes or Code CWE