XWiki fixes a high-severity vulnerability

Do you think this report is well-written? *

Yes

Do you use this technology? *

Yes

Was this report useful to you?

Yes

We would be happy if you would describe:

The security services provided by CESNET are designed to provide significant support in ensuring the cybersecurity of connected organizations. Although we strive to provide quality and reliable services, it is not possible to guarantee absolute coverage of all security vulnerabilities. Our services should be seen as a complement to an organization's own security management, not as a replacement. The client bears ultimate responsibility for securing their environment.

This report was translated by AI; nobody has reviewed the translation yet. Original language: Czech.

[TLP:CLEAR] XWiki fixes a high-severity vulnerability

XWiki fixes a high-severity vulnerability in versions 17.4.8 and 17.10.1 [1].

XWiki Platform - RCE (CVE-2026-33229)

CVSS 8.6 (High)

Allows an authenticated remote attacker with Script rights, due to insufficient protection of the scripting API, to bypass the sandbox in Velocity, execute arbitrary Python scripts and gain full access to the instance [1].

The vulnerability is present in product:

XWiki; >=17.0.0-rc-1, <17.4.8; >=17.5.0-rc-1, <17.10.1;

CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

More information:

CVE-2026-33229 at cve.org, NVD
CWE-862: Missing Authorization at cwe.mitre.org

The vulnerability was publicly disclosed 8. 4. 2026.

Report feedback

[TLP:CLEAR] XWiki fixes a high-severity vulnerability

XWiki Platform - RCE (CVE-2026-33229)

CVSS 8.6 (High)

Links