What is CVE-2023-29523?

CVE-2023-29523 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-2023-29523?

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

Is CVE-2023-29523 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Xwiki

CVE-2023-29523

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user who can edit their own user profile can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The same vulnerability can also be exploited in other contexts where the `display` method on a document is used to display a field with wiki syntax, for example in applications created using `App Within Minutes`. This has been patched in XWiki 13.10.11, 14.4.8, 14.10.2 and 15.0RC1. There is no workaround apart from upgrading.

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: 0.020 (80.0th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000

Affected products

Xwiki
Xwiki Xwiki-Platform — versions >= 3.3-milestone-1, < 13.10.11, >= 14.0-rc-1, < 14.4.8, >= 14.5, < 14.10.1

Weakness classification (CWE)

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

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

github.com/xwiki/xwiki-platform/security/advisories/GHSA-x764-ff8r-9hpx (Exploit, Patch, Vendor Advisory)
github.com/xwiki/xwiki-platform/commit/0d547181389f7941e53291af940966413823f61c (Patch)
extensions.xwiki.org/xwiki/bin/view/Extension/App Within Minutes Application (Product)
jira.xwiki.org/browse/XWIKI-20327 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2023-29523?: CVE-2023-29523 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-2023-29523?: Critical severity. CVSS v3 base score is 9.9 out of 10.
Is CVE-2023-29523 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.