# The WikiManager REST API allows any user to create wikis

Advisory record · `GHSA-gfp2-6qhm-7x43`

- **Identifiers:** `GHSA-gfp2-6qhm-7x43` · `CVE-2025-29926`
- **State:** Confirmed
- **Severity:** CVSS 7.9 High
- **Critical:** No
- **Weakness (CWE):** [CWE-285](https://cwe.mitre.org/data/definitions/285.html) · [CWE-862](https://cwe.mitre.org/data/definitions/862.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 19 Mar 2025
- **Updated:** 19 Mar 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Mar 2025, 20:34 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.xwiki.platform:xwiki-platform-wiki-rest-default` (Maven): affected `>=5.4-rc-1, <15.10.15 || >=16.0.0-rc-1, <16.4.6 || >=16.5.0-rc-1, <16.10.0`; fixed in `15.10.15`, `16.4.6`, `16.10.0`

## Machine-written summary

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

> The xwiki-platform-wiki-rest-default REST module (Maven org.xwiki.platform) is vulnerable in versions from 5.4-rc-1 up to 15.10.15, from 16.0.0-rc-1 up to 16.4.6, and from 16.5.0-rc-1 up to 16.10.0. Any user, without special privileges, can use the WikiManager REST API to create a new wiki and become its administrator, which allows further attacks on the wiki farm. Upgrade to 15.10.15, 16.4.6, or 16.10.0; no workaround is listed.

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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0058, the 48th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:11 UTC: First seen by agentprime
- 31 Oct 2026, 15:11 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-gfp2-6qhm-7x43)

## Sources

- [GitHub Advisory Database: GHSA-gfp2-6qhm-7x43](https://github.com/advisories/GHSA-gfp2-6qhm-7x43)
- [OSV: GHSA-gfp2-6qhm-7x43](https://osv.dev/vulnerability/GHSA-gfp2-6qhm-7x43)
- <https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-gfp2-6qhm-7x43>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-29926>
- <https://github.com/xwiki/xwiki-platform/commit/82aa670106c7f5e6238ca6ed59a52d1800e05b99>
- <https://github.com/xwiki/xwiki-platform>
- <https://jira.xwiki.org/browse/XWIKI-22490>

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-gfp2-6qhm-7x43>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-gfp2-6qhm-7x43/>. Everything for agents: <https://agentprime.io/llms.txt>.