CVE-2023-45364

Name: CVE-2023-45364
Creator: NVD / NIST
Published: 2023-10-09T05:15:09.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2023-45364 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. An issue was discovered in includes/page/Article.php in MediaWiki 1.36.x through 1.39.x before 1.39.5 and 1.40.x before 1.40.1. Deleted revision existence is leaked due to incorrect permissions being checked. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

An issue was discovered in includes/page/Article.php in MediaWiki 1.36.x through 1.39.x before 1.39.5 and 1.40.x before 1.40.1. Deleted revision existence is leaked due to incorrect permissions being checked. This reveals that a given revision ID belonged to the given page title, and its timestamp, both of which are not supposed to be public information.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.42%

33.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-732

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	>= 1.36.0, < 1.39.5
Mediawiki	Mediawiki	1.40.0
Debian	Debian Linux	11.0
Debian	Debian Linux	12.0

References

https://phabricator.wikimedia.org/T264765Issue Tracking, Vendor Advisory
https://www.debian.org/security/2023/dsa-5520Third Party Advisory
https://phabricator.wikimedia.org/T264765Issue Tracking, Vendor Advisory
https://www.debian.org/security/2023/dsa-5520Third Party Advisory

Timeline

Published: Oct 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-45364?

How severe is CVE-2023-45364?

CVE-2023-45364 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2023-45364?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-45364?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST