Medium severity · published Apr 6, 2021
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
6.1
CVSS
1.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 70% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
ME
Mediawiki · Mediawiki
before 1.31.12; 1.32.0 before 1.35.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30154
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
Exploit
https://phabricator.wikimedia.org/T278014
Third Party Advisory
https://security.gentoo.org/glsa/202107-40
Third Party Advisory
https://www.debian.org/security/2021/dsa-4889
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