Auth bypass in MediaWiki

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.

Vulnerability class: Broken Access Control

EPSS: 0.014 (69.8th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-25869?
CVE-2020-25869 is a high-severity vulnerability in MediaWiki, classified under Incorrect Authorization. CVSS score: 7.5/10. Published 2020-09-27.
How severe is CVE-2020-25869?
High severity. CVSS v3 base score is 7.5 out of 10.