Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The org.xwiki.rendering:xwiki-rendering-xml Maven package is affected in versions before 14.10.2. Any user who can edit their own user profile or another document can inject script macros, such as Groovy or Python macros, that run with programming rights and allow remote code execution and unrestricted read and write access to wiki contents. Upgrade to version 14.10.2 or later. The source gives no workaround the reader can apply directly.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.9 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.015, the 74th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:16 UTC First seen by agentprime
- 31 Oct 2026, 14:16 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-26vp-8gxg-v4pg
- OSV: GHSA-26vp-8gxg-v4pg
- github.com/xwiki/xwiki-rendering/security/advisories/GHSA-26vp-8gxg-v4pg
- github.com/xwiki/xwiki-rendering/commit/92bc8095ed3acce15ab200c8525e1623b4898be5
- github.com/xwiki/xwiki-rendering
- github.com/xwiki/xwiki-rendering/releases/tag/xwiki-rendering-14.10.2
- github.com/xwiki/xwiki-rendering/releases/tag/xwiki-rendering-15.0-rc-1
- jira.xwiki.org/browse/XRENDERING-693
- jira.xwiki.org/browse/XWIKI-20313
- jira.xwiki.org/browse/XWIKI-20327