What is CVE-2023-35166?

CVE-2023-35166 is a critical-severity vulnerability in Xwiki, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2023-06-20.

How severe is CVE-2023-35166?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Xwiki

CVE-2023-35166

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It's possible to execute any wiki content with the right of the TipsPanel author by creating a tip UI extension. This has been patched in XWiki 15.1-rc-1 and 14.10.5.

Vulnerability class: Broken Access Control

Published 2023-06-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.622 (99.2th percentile), scored 2026-10-30.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.622 · newest: 0.622 · change: 0.000

Affected products

Xwiki
Xwiki Xwiki-Platform — versions >= 8.1-milestone-1, < 14.10.5, >= 15.0-rc-1, < 15.1-rc-1

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/xwiki/xwiki-platform/security/advisories/GHSA-h7cw-44vp-jq7h (Patch, Vendor Advisory)
github.com/xwiki/xwiki-platform/commit/98208c5bb1e8cdf3ff1ac35d8b3d1cb3c28b3263 (Patch)
jira.xwiki.org/browse/XWIKI-20281 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2023-35166?: CVE-2023-35166 is a critical-severity vulnerability in Xwiki, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2023-06-20.
How severe is CVE-2023-35166?: Critical severity. CVSS v3 base score is 9.9 out of 10.