What is CVE-2026-33229?

CVE-2026-33229 is a critical-severity vulnerability in Org.xwiki.platform Xwiki-Platform-Legacy-Oldcore, classified under Missing Authorization. CVSS score: 9.8/10. Published 2026-04-08.

How severe is CVE-2026-33229?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-33229 known to be exploited?

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

Auth bypass in Org.xwiki.platform Xwiki-Platform-Legacy-Oldcore

CVE-2026-33229

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.4.8 and 17.10.1, an improperly protected scripting API allows any user with script right to bypass the sandboxing of the Velocity scripting API and execute, e.g., arbitrary Python scripts, allowing full access to the XWiki instance and thereby compromising the confidentiality, integrity and availability of the whole instance. Note that script right already constitutes a high level of access that we don't recommend giving to untrusted users. This vulnerability is fixed in 17.4.8 and 17.10.1.

Vulnerability class: Broken Access Control

EPSS: 0.005 (42.3th percentile) — read the EPSS interpretation.

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.

Affected products

Org.xwiki.platform Xwiki-platform-legacy-oldcore — versions >= 17.0.0-rc-1, < 17.4.8, >= 17.5.0-rc-1, < 17.10.1
Org.xwiki.platform Xwiki-platform-oldcore — versions >= 17.0.0-rc-1, < 17.4.8, >= 17.5.0-rc-1, < 17.10.1
Xwiki
Xwiki Xwiki-platform — versions >= 17.0.0-rc-1, < 17.4.8, >= 17.5.0-rc-1, < 17.10.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

azefzafyoussef/CVE-2026-33229

References

security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Exploit, x_refsource_MISC, Vendor Advisory)
security-advisories@github.com (Exploit, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33229?: CVE-2026-33229 is a critical-severity vulnerability in Org.xwiki.platform Xwiki-Platform-Legacy-Oldcore, classified under Missing Authorization. CVSS score: 9.8/10. Published 2026-04-08.
How severe is CVE-2026-33229?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-33229 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.