CVE-2020-35479

MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. Language::translateBlockExpiry itself does not escape in all code paths. For example, the return of Language::userTimeAndDate is is always unsafe for HTML in a month value. This affects MediaWiki 1.12.0 and later.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
mitreCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 76%
VendorProductVersion
mediawikimediawiki
1.12.0 ≤
𝑥
< 1.35.1
debiandebian_linux
9.0
debiandebian_linux
10.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
mediawiki
bullseye
1:1.35.13-1+deb11u2
fixed
bullseye (security)
1:1.35.13-1+deb11u3
fixed
bookworm
1:1.39.7-1~deb12u1
fixed
bookworm (security)
1:1.39.10-1~deb12u1
fixed
sid
1:1.39.10-1
fixed
trixie
1:1.39.10-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
mediawiki
noble
needs-triage
mantic
ignored
lunar
ignored
kinetic
ignored
jammy
needs-triage
impish
ignored
hirsute
ignored
groovy
ignored
focal
needs-triage
bionic
needs-triage
xenial
dne
trusty
dne
Common Weakness Enumeration
References
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
https://phabricator.wikimedia.org/T268938
https://www.debian.org/security/2020/dsa-4816
https://lists.debian.org/debian-lts-announce/2020/12/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html
https://phabricator.wikimedia.org/T268938
https://www.debian.org/security/2020/dsa-4816