# CVE-2025-61646: Watchlist group mode reveals authors of edits with hidden authorship

> Attackers can view authors of edits marked as hidden in MediaWiki watchlist group mode, exposing private user data.

- **Severity:** Low 1.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 3 Feb 2026
- **Updated:** 3 Mar 2026
- **Also known as:** DEBIAN-CVE-2025-61646, GHSA-v564-5h76-v6ch, UBUNTU-CVE-2025-61646

## What is CVE-2025-61646?

CVE-2025-61646 is a low-severity vulnerability in Mediawiki Mediawiki, published on 3 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/RecentChanges/EnhancedChangesList.Php.

This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-61646?

It affects 1 product.


Products: Mediawiki Mediawiki.

## How do I fix CVE-2025-61646?

Upgrade to a fixed version.

## Is CVE-2025-61646 being exploited?

There is no known exploitation of CVE-2025-61646 in the wild and no public exploit code.

## Other vulnerabilities in Mediawiki Mediawiki

- [CVE-2023-37303](https://insights.sbomify.com/CVE-2023-37303/): Denial of service in n/a (critical 9.8)
- [CVE-2022-29904](https://insights.sbomify.com/CVE-2022-29904/): SQL injection in n/a (critical 9.8)
- [CVE-2022-29906](https://insights.sbomify.com/CVE-2022-29906/): Missing authorization in n/a (critical 9.8)
- [CVE-2022-28205](https://insights.sbomify.com/CVE-2022-28205/): Business logic in n/a (critical 9.8)
- [CVE-2022-28206](https://insights.sbomify.com/CVE-2022-28206/): Missing authorization in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-61646 and fix it if it is affected.

What it is: CVE-2025-61646 is a low-severity vulnerability in Mediawiki Mediawiki, published on 3 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-61646 in the wild and no public exploit code.

Affected product: Mediawiki Mediawiki. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-61646/ (Markdown: https://insights.sbomify.com/CVE-2025-61646/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-61646
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-61646
- OSV: https://osv.dev/vulnerability/CVE-2025-61646

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-61646/
Summaries are generated and may contain mistakes; the official description above is the record.