What is CVE-2023-37301?

CVE-2023-37301 is a medium-severity vulnerability in MediaWiki, classified under Inadequate Encryption Strength. CVSS score: 5.3/10. Published 2023-06-30.

How severe is CVE-2023-37301?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in MediaWiki

CVE-2023-37301

An issue was discovered in SubmitEntityAction in Wikibase in MediaWiki through 1.39.3. Because it doesn't use EditEntity for undo and restore, the intended interaction with AbuseFilter does not occur.

Published 2023-06-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

MediaWiki

Weakness classification (CWE)

CWE-326 — Inadequate Encryption Strength

References

phabricator.wikimedia.org/T250720 (Exploit, Issue Tracking, Vendor Advisory)
gerrit.wikimedia.org/r/c/mediawiki/extensions/Wikibase/+/933663 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2023-37301?: CVE-2023-37301 is a medium-severity vulnerability in MediaWiki, classified under Inadequate Encryption Strength. CVSS score: 5.3/10. Published 2023-06-30.
How severe is CVE-2023-37301?: Medium severity. CVSS v3 base score is 5.3 out of 10.