CVE-2020-35477
5.3
MEDIUM
CVSS 3.1
EPSS 0.47%
Description
MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
How to fix CVE-2020-35477
To remediate CVE-2020-35477, upgrade the affected package to a fixed version below.
- —upgrade to 1.35.1 or later
- —upgrade to 1:1.35.1-1 or later
Is CVE-2020-35477 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.35.1
- from 0, < 1:1.35.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
References (7)
- ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-35477
- WEBlists.debian.org/debian-lts-announce/2020/12/msg00034.html
- WEBlists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/
- WEBlists.wikimedia.org/pipermail/mediawiki-announce/2020-December/000268.html