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CVE-2021-29272

Published: 27 March 2021

bluemonday before 1.0.5 allows XSS because certain Go lowercasing converts an uppercase Cyrillic character, defeating a protection mechanism against the "script" string.

Priority

Medium

Cvss 3 Severity Score

6.1

Score breakdown

Status

Package Release Status
golang-github-microcosm-cc-bluemonday
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
jammy Needed

kinetic Ignored
(end of life, was needed)
bionic Needed

focal Does not exist

hirsute Ignored
(end of life)
trusty Does not exist

upstream
Released (1.0.5)
xenial Does not exist

groovy Ignored
(end of life)
lunar Not vulnerable
(1.0.18-2)
mantic Not vulnerable
(1.0.18-2)
Patches:
upstream: https://github.com/microcosm-cc/bluemonday/commit/f0b9183730b3e2a753b6d5bf61797f6f5261afda

Severity score breakdown

Parameter Value
Base score 6.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N