What is CVE-2020-29005?

CVE-2020-29005 is a high-severity vulnerability in MediaWiki, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2021-01-29.

How severe is CVE-2020-29005?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in MediaWiki

CVE-2020-29005

The API in the Push extension for MediaWiki through 1.35 used cleartext for ApiPush credentials, allowing for potential information disclosure.

Published 2021-01-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

MediaWiki

Weakness classification (CWE)

References

phabricator.wikimedia.org/T262724 (Patch, Issue Tracking, Vendor Advisory)
gerrit.wikimedia.org/r/c/mediawiki/extensions/Push/+/625988 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-29005?: CVE-2020-29005 is a high-severity vulnerability in MediaWiki, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2021-01-29.
How severe is CVE-2020-29005?: High severity. CVSS v3 base score is 7.5 out of 10.