The lesscss script service allows cache clearing without programming right

CVE-2025-32972 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

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.

Patches

This has been patched in XWiki 15.10.12, 16.4.3 and 16.8.0 RC1.

Workarounds

We're not aware of any workaround except for being careful whom to give script right, which is a general recommendation.

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2025-04-29 14:01:47 UTC
Updated
2025-04-30 17:29:25 UTC
GitHub reviewed
2025-04-29 14:01:47 UTC
NVD published
2025-04-30

EPSS Score

Score Percentile
0.12% 30.83%

CVSS Scores

Base score Version Severity Vector
2.7 3.1 —
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.

Identifiers

Type Value
GHSA GHSA-rp38-24m3-rx87 ↗
CVE CVE-2025-32972 ↗

CWEs

CWE id Name
CWE-285 Improper Authorization

Affected packages (3)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven org.xwiki.platform:xwiki-platform-lesscss-script >= 6.1-milestone-1, < 15.10.12 15.10.12 —
maven org.xwiki.platform:xwiki-platform-lesscss-script >= 16.0.0-rc-1, < 16.4.3 16.4.3 —
maven org.xwiki.platform:xwiki-platform-lesscss-script >= 16.5.0-rc-1, < 16.8.0-rc-1 16.8.0-rc-1 —

References

cvelogic Threat Intelligence