org.xwiki.rendering:xwiki-rendering-xml has an Eval Injection issue — GHSA-26VP-8GXG-V4PG

Summary

### Impact Any user who can edit their own user profile or any other document can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The reason is that rendering output is included as content of HTML macros without further escaping and it is thus possible to close the HTML macro and inject script…

Timeline

Published by source

2026-09-18

Risk context

• Reported severity or threat level: critical.
• Reported CVSS score: 9.9 out of 10.
• Review exposure for the affected product or family: maven: org.xwiki.rendering:xwiki-rendering-xml.

Product

maven: org.xwiki.rendering:xwiki-rendering-xml

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-26VP-8GXG-V4PG

Source

GitHub

Vendor

GitHub

Published by source

2026-09-18

Last source activity

2026-09-18

Additional identifiers

CVE-2025-53837

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.