CVE-2020-35480: An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due…

PriorityP427medium5.3CVSS 3.1

AVNACLPRNUINSUCLINAN

EPSS

1.52%

71.7th percentile

An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	debian_linux	—	—
debian	mediawiki	< mediawiki 1:1.35.1-1 (bookworm)	mediawiki 1:1.35.1-1 (bookworm)
fedoraproject	fedora	—	—
mediawiki	mediawiki	< 1.35.1	1.35.1
mediawiki	mediawiki	>= 0 < 1:1.35.1-1	1:1.35.1-1
mediawiki	mediawiki	>= 0 < 1:1.35.1-1	1:1.35.1-1
mediawiki	mediawiki	>= 0 < 1:1.35.1-1	1:1.35.1-1
mediawiki	mediawiki	>= 0 < 1:1.35.1-1	1:1.35.1-1

CVSS provenance

nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N

osv5.3MEDIUM

vendor_debian5.3MEDIUM

vendor_redhat5.3MEDIUM

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.