CVE-2021-30154: An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On Special:NewFiles, all the mediastatistics-header-* messages are…

PriorityP425medium6.1CVSS 3.1

AVNACLPRNUIRSCCLILAN

EPSS

1.31%

67.3th percentile

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On Special:NewFiles, all the mediastatistics-header-* messages are output in HTML unescaped, leading to XSS.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	mediawiki	< mediawiki 1:1.35.2-1 (bookworm)	mediawiki 1:1.35.2-1 (bookworm)
fedoraproject	fedora	—	—
fedoraproject	fedora	—	—
mediawiki	mediawiki	< 1.31.12	1.31.12
mediawiki	mediawiki	>= 0 < 1:1.35.2-1	1:1.35.2-1
mediawiki	mediawiki	>= 0 < 1:1.35.2-1	1:1.35.2-1
mediawiki	mediawiki	>= 0 < 1:1.35.2-1	1:1.35.2-1
mediawiki	mediawiki	>= 0 < 1:1.35.2-1	1:1.35.2-1
mediawiki	mediawiki	>= 1.32.0 < 1.35.2	1.35.2

CVSS provenance

nvdv3.16.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

osv6.1MEDIUM

vendor_debian6.1MEDIUM

vendor_redhat6.1MEDIUM

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.