# XWiki OIDC Authenticator: Users with "view" access can create tokens for any users they can view

Advisory record · `GHSA-f2hf-pfrj-vrm7`

- **Identifiers:** `GHSA-f2hf-pfrj-vrm7` · `CVE-2025-49594`
- **State:** Confirmed
- **Severity:** CVSS 9.2 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-285](https://cwe.mitre.org/data/definitions/285.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 6 Oct 2025
- **Updated:** 23 Oct 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 6 Oct 2025, 17:58 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.2: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `org.xwiki.contrib.oidc:oidc-authenticator` (Maven): affected `>=2.17.1, <2.18.2`; fixed in `2.18.2`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> The Maven package org.xwiki.contrib.oidc:oidc-authenticator, versions 2.17.1 up to but not including 2.18.2, is vulnerable. A user with only VIEW access to a user profile can create a token for that user, and on XWiki instances that allow token authentication this lets them authenticate as any user they can view. Upgrade to version 2.18.2; the only listed workaround is to disable token access.

Written 7 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.2 Critical, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0044, the 38th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:10 UTC: First seen by agentprime
- 31 Oct 2026, 15:10 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-f2hf-pfrj-vrm7)

## Sources

- [GitHub Advisory Database: GHSA-f2hf-pfrj-vrm7](https://github.com/advisories/GHSA-f2hf-pfrj-vrm7)
- [OSV: GHSA-f2hf-pfrj-vrm7](https://osv.dev/vulnerability/GHSA-f2hf-pfrj-vrm7)
- <https://github.com/xwiki-contrib/oidc/security/advisories/GHSA-f2hf-pfrj-vrm7>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-49594>
- <https://github.com/xwiki-contrib/oidc/commit/d90d717172283aaa96bb5bb44e357f910ae64adb>
- <https://github.com/xwiki-contrib/oidc>
- <https://jira.xwiki.org/browse/OIDC-240>
- <https://www.vicarius.io/vsociety/posts/cve-2025-49594-detect-xwiki-vulnerability>
- <https://www.vicarius.io/vsociety/posts/cve-2025-49594-mitigate-xwiki-vulnerability>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-f2hf-pfrj-vrm7>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-f2hf-pfrj-vrm7/>. Everything for agents: <https://agentprime.io/llms.txt>.