CVE-2025-43861: managewiki XSS — Exploit & Fix

Description

ManageWiki is a MediaWiki extension allowing users to manage wikis. Prior to commit 2f177dc, ManageWiki is vulnerable to reflected or stored XSS in the review dialog. A logged-in attacker must change a form field to include a malicious payload. If that same user then opens the "Review Changes" dialog, the payload will be rendered and executed in the context of their own session. This issue has been patched in commit 2f177dc.

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CVSS v3.1 Score

4.4

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
miraheze	managewiki	< 2025-04-24

References

Advisories & Patches

https://github.com/miraheze/ManageWiki/commit/2f177dc83b28b727613215b835d4036cb179e4ab https://github.com/miraheze/ManageWiki/security/advisories/GHSA-859x-46h8-vcrv

Exploits

https://github.com/miraheze/ManageWiki/security/advisories/GHSA-859x-46h8-vcrv

Frequently Asked Questions

What is CVE-2025-43861? +

ManageWiki is a MediaWiki extension allowing users to manage wikis. Prior to commit 2f177dc, ManageWiki is vulnerable to reflected or stored XSS in the review dialog. A logged-in attacker must change a form field to include a malicious payload. If that same user then opens the "Review Changes" dialog, the payload will be rendered and executed in the context of their own session. This issue has been patched in commit 2f177dc. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2025-43861? +

CVE-2025-43861 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-43861? +

CVE-2025-43861 affects products from miraheze, specifically: managewiki. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43861? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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