What is CVE-2023-29510?

CVE-2023-29510 is a critical-severity vulnerability in Xwiki, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.9/10. Published 2023-04-19.

How severe is CVE-2023-29510?

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

Vulnerability in Xwiki

CVE-2023-29510

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In XWiki, every user can add translations that are only applied to the current user. This also allows overriding existing translations. Such translations are often included in privileged contexts without any escaping which allows remote code execution for any user who has edit access on at least one document which could be the user's own profile where edit access is enabled by default. A mitigation for this vulnerability is part of XWiki 14.10.2 and XWiki 15.0 RC1: translations with user scope now require script right. This means that regular users cannot exploit this anymore as users don't have script right by default anymore starting with XWiki 14.10. There are no known workarounds apart from upgrading to a patched versions.

Published 2023-04-19 · 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: 0.019 (78.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Xwiki
Xwiki Xwiki-Platform — versions < 14.10.2

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

github.com/xwiki/xwiki-platform/security/advisories/GHSA-4v38-964c-xjmw (Exploit, Patch, Vendor Advisory)
github.com/xwiki/xwiki-platform/commit/d06ff8a58480abc7f63eb1d4b8b366024d990643 (Patch)
jira.xwiki.org/browse/XWIKI-19749 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-29510?: CVE-2023-29510 is a critical-severity vulnerability in Xwiki, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.9/10. Published 2023-04-19.
How severe is CVE-2023-29510?: Critical severity. CVSS v3 base score is 9.9 out of 10.