CVE-2020-25869

Name: CVE-2020-25869
Creator: NVD / NIST
Published: 2020-09-27T21:15:12.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2020-25869 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An information leak was discovered in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. Handling of actor ID does not necessarily use the correct database or correct wiki.. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

An information leak was discovered in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. Handling of actor ID does not necessarily use the correct database or correct wiki.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.31.10
Mediawiki	Mediawiki	>= 1.32.0, < 1.34.4
Fedoraproject	Fedora	33

References

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing List, Vendor Advisory
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing List, Vendor Advisory
https://phabricator.wikimedia.org/T260485Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.htmlMailing List, Vendor Advisory
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.htmlMailing List, Vendor Advisory
https://phabricator.wikimedia.org/T260485Permissions Required, Vendor Advisory

Timeline

Published: Sep 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25869?

An information leak was discovered in MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4. Handling of actor ID does not necessarily use the correct database or correct wiki.

How severe is CVE-2020-25869?

CVE-2020-25869 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25869?

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-2020-25869?

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

Scan your code now

Source: NVD / NIST