XSS in Miraheze Managewiki
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (15.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Miraheze Managewiki — versions < 2f177dc
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/miraheze/ManageWiki/security/advisories/GHSA-859x-46h8-vcrv (Exploit, Patch, Vendor Advisory)
- github.com/miraheze/ManageWiki/commit/2f177dc83b28b727613215b835d4036cb179e4ab (Patch)
Frequently asked questions
- What is CVE-2025-43861?
- CVE-2025-43861 is a medium-severity vulnerability in Miraheze Managewiki, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2025-04-24.
- How severe is CVE-2025-43861?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2025-43861 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.