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CVE-2025-61634

HTML rest endpoint needs PoolCounter and proper parser cache check

0.0 NoneFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Active

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
None

Exploit likelihood

0.31%Up 0.3 points since Feb 3, 2026
90%50%10%1%

What each source reports

CVE List Score used 0.0

HTML rest endpoint needs PoolCounter and proper parser cache check

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.

Record
CVE-2025-61634
CVSS 4.0
0.0 NoneCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/RE:M/U:Green
Updated
2026-11-02
EUVDEUVD-2025-206623 No score

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.

Record
EUVD-2025-206623
Updated
2026-11-02
GitHub AdvisoriesGHSA-xh35-43pp-33v2 0.0

Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program...

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.

Record
GHSA-xh35-43pp-33v2
CVSS 4.0
0.0 NoneCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:Green
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 0.0

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.

Record
CVE-2025-61634
CVSS 4.0
0.0 NoneCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:M/U:Green
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 3.1

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.

Record
CVE-2025-61634
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2025-61634 3.1

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.

Record
DEBIAN-CVE-2025-61634
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2025-61634 0.0

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.

Record
UBUNTU-CVE-2025-61634
CVSS 4.0
0.0 NoneCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/RE:M/U:Green
CVSS 3.1
3.1 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mediawiki
Debian:13
 before 1:1.43.6+dfsg-1~deb13u1, plus listed versions
1:1.43.3+dfsg-11:1.43.5+dfsg-1
1:1.43.6+dfsg-1~deb13u1
mediawiki
Debian:14
 before 1:1.43.5+dfsg-1, plus listed versions
1:1.43.3+dfsg-1
1:1.43.5+dfsg-1
mediawiki
Ubuntu:18.04:LTS
 All versions, plus listed versions
1:1.27.3-11:1.27.4-11:1.27.4-21:1.27.4-3
 None known
mediawiki
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
1:1.31.2-1ubuntu11:1.31.5-11:1.31.5-1ubuntu11:1.31.5-21:1.31.5-3
Show 4 moreShow less
1:1.31.5-3ubuntu11:1.31.6-11:1.31.7-11:1.31.7-1ubuntu0.1~esm1
 None known
mediawiki
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
1:1.35.3-11:1.35.4-11:1.35.5-11:1.35.5-1ubuntu11:1.35.5-1ubuntu21:1.35.5-1ubuntu31:1.35.6-11:1.35.6-1ubuntu0.1~esm1
 None known
mediawiki
Ubuntu:Pro:24.04:LTS
 All versions, plus listed versions
1:1.39.4-21:1.39.5-11:1.39.6-11:1.39.7-11:1.39.7-1ubuntu0.1~esm1
 None known
mediawiki
Ubuntu:25.10
 All versions, plus listed versions
1:1.43.1+dfsg-11:1.43.1+dfsg-21:1.43.3+dfsg-1
 None known
mediawiki
Ubuntu:26.10
 All versions, plus listed versions
1:1.43.8+dfsg-21:1.43.9+dfsg-11:1.43.9+dfsg-1ubuntu1
 None known
mediawiki
Ubuntu:26.04:LTS
 All versions, plus listed versions
1:1.43.3+dfsg-11:1.43.5+dfsg-11:1.43.6+dfsg-21:1.43.8+dfsg-11:1.43.8+dfsg-2
 None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-61634 is a none vulnerability (CVSS 0.0) in Mediawiki, published February 2, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 24th percentile. Fixed in mediawiki 1:1.43.6+dfsg-1~deb13u1.

References

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