How severe is CVE-2025-61634?

CVE-2025-61634 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-61634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-61634?

CVE-2025-61634 affects Mediawiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-61634?

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

Does CVE-2025-61634 have an EU (EUVD) identifier?

Yes. CVE-2025-61634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206623.

When was CVE-2025-61634 published?

CVE-2025-61634 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2025-61634

CVE-2025-61634 is a low-severity vulnerability in Mediawiki with a CVSS 3.x base score of 3.1. 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-22.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v4: 0.0
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206623
Weakness: CWE-22
Affected product: Mediawiki
Published: 2026-02-03
Last modified: 2026-06-17

Description

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Rest/Handler/PageHTMLHandler.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.

Frequently asked questions

What is CVE-2025-61634?: Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Rest/Handler/PageHTMLHandler.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1.
How severe is CVE-2025-61634?: CVE-2025-61634 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-61634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-61634?: CVE-2025-61634 affects Mediawiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-61634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-61634 have an EU (EUVD) identifier?: Yes. CVE-2025-61634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206623.
When was CVE-2025-61634 published?: CVE-2025-61634 was published on 2026-02-03 and last updated on 2026-06-17.

References

https://phabricator.wikimedia.org/T387478

Affected products (1)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

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