CVE-2025-61638: Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia…

PriorityP420medium4.8CVSS 3.1

AVNACLPRHUIRSCCLILAN

EPSS

0.23%

14.2th percentile

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki, Wikimedia Foundation Parsoid. This vulnerability is associated with program files includes/parser/Sanitizer.Php, src/Core/Sanitizer.Php. This issue affects MediaWiki: from * before 1.39.14, 1.43.4, 1.44.1; Parsoid: from * before 0.16.6, 0.20.4, 0.21.1.

Affected

13 ranges

Vendor	Product	Version range	Fixed in
debian	mediawiki	< mediawiki 1:1.39.17-1~deb12u1 (bookworm)	mediawiki 1:1.39.17-1~deb12u1 (bookworm)
mediawiki	mediawiki	< 1.39.14	1.39.14
mediawiki	mediawiki	>= 0 < 1:1.35.13-1+deb11u5	1:1.35.13-1+deb11u5
mediawiki	mediawiki	>= 0 < 1:1.39.17-1~deb12u1	1:1.39.17-1~deb12u1
mediawiki	mediawiki	>= 0 < 1:1.43.6+dfsg-1~deb13u1	1:1.43.6+dfsg-1~deb13u1
mediawiki	mediawiki	>= 0 < 1:1.43.5+dfsg-1	1:1.43.5+dfsg-1
mediawiki	mediawiki	>= 1.39.15 < 1.43.4	1.43.4
mediawiki	mediawiki	>= 1.43.5 < 1.44.1	1.44.1
wikimedia	parsoid	< 0.16.6	0.16.6
wikimedia	parsoid	< 0.20.4	0.20.4
wikimedia	parsoid	< 0.21.1	0.21.1
wikimedia_foundation	mediawiki	>= * < 1.39.14, 1.43.4, 1.44.1	1.39.14, 1.43.4, 1.44.1
wikimedia_foundation	parsoid	>= * < 0.16.6, 0.20.4, 0.21.1	0.16.6, 0.20.4, 0.21.1

CVSS provenance

nvdv3.14.8MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

nvdv4.00.0NONECVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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:X/U:X

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