How severe is CVE-2025-43861?

CVE-2025-43861 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-43861 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43861?

CVE-2025-43861 affects Miraheze Managewiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43861?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-43861 have an EU (EUVD) identifier?

Yes. CVE-2025-43861 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12404.

When was CVE-2025-43861 published?

CVE-2025-43861 was published on 2025-04-24 and last updated on 2026-06-17.

CVE-2025-43861

CVE-2025-43861 is a medium-severity vulnerability in Miraheze Managewiki with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-12404
Weakness: CWE-79
Affected product: Miraheze Managewiki
Published: 2025-04-24
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-43861?: CVE-2025-43861 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-43861 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43861?: CVE-2025-43861 affects Miraheze Managewiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43861?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-43861 have an EU (EUVD) identifier?: Yes. CVE-2025-43861 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-12404.
When was CVE-2025-43861 published?: CVE-2025-43861 was published on 2025-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:miraheze:managewiki:*:*:*:*:*:*:*:*

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