Auth bypass in Xwiki
CVE-2025-29926
XWiki Platform is a generic wiki platform. Prior to 15.10.15, 16.4.6, and 16.10.0, any user can exploit the WikiManager REST API to create a new wiki, where the user could become an administrator and so performs other attacks on the farm. Note that this REST API is not bundled in XWiki Standard by default: it needs to be installed manually through the extension manager. The problem has been patched in versions 15.10.15, 16.4.6 and 16.10.0 of the REST module.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Xwiki — versions 5.4
- Xwiki Xwiki-Platform — versions >= 5.4-rc-1, < 15.10.15, >= 16.0.0-rc-1, < 16.4.6, >= 16.5.0-rc-1, < 16.10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/xwiki/xwiki-platform/security/advisories/GHSA-gfp2-6qhm-7x43 (Vendor Advisory)
- github.com/xwiki/xwiki-platform/commit/82aa670106c7f5e6238ca6ed59a52d1800e05b99 (Patch)
- jira.xwiki.org/browse/XWIKI-22490 (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-29926?
- CVE-2025-29926 is a critical-severity vulnerability in Xwiki, classified under Improper Authorization. CVSS score: 9.8/10. Published 2025-03-19.
- How severe is CVE-2025-29926?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-29926 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.