XWiki LESS Compiler Cache Bypass (v15.10.12 - 16.8.0-rc-1)
CVE-2025-32972 Published on April 30, 2025
The lesscss script service allows cache clearing without programming right
XWiki is a generic wiki platform. In versions starting from 6.1-milestone-1 to before 15.10.12, from 16.0.0-rc-1 to before 16.4.3, and from 16.5.0-rc-1 to before 16.8.0-rc-1, the script API of the LESS compiler in XWiki is incorrectly checking for rights when calling the cache cleaning API, making it possible to clean the cache without having programming right. The only impact of this is a slowdown in XWiki execution as the caches are re-filled. As this vulnerability requires script right to exploit, and script right already allows unlimited execution of scripts, the additional impact due to this vulnerability is low. This issue has been patched in versions 15.10.12, 16.4.3, and 16.8.0-rc-1.
Vulnerability Analysis
CVE-2025-32972 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2025-32972. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a small impact on availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CVE-2025-32972 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2025-32972
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Affected Versions
xwiki-platform:- Version >= 6.1-milestone-1, < 15.10.12 is affected.
- Version >= 16.0.0-rc-1, < 16.4.3 is affected.
- Version >= 16.5.0-rc-1, < 16.8.0-rc-1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.