What is CVE-2021-31547?

CVE-2021-31547 is a medium-severity vulnerability in MediaWiki, classified under Information Disclosure. CVSS score: 4.3/10. Published 2021-04-22.

How severe is CVE-2021-31547?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in MediaWiki

CVE-2021-31547

An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. Its AbuseFilterCheckMatch API reveals suppressed edits and usernames to unprivileged users through the iteration of crafted AbuseFilter rules.

Vulnerability class: Information Disclosure

EPSS: 0.009 (55.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mediawiki
N/a — versions n/a

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-31547?: CVE-2021-31547 is a medium-severity vulnerability in MediaWiki, classified under Information Disclosure. CVSS score: 4.3/10. Published 2021-04-22.
How severe is CVE-2021-31547?: Medium severity. CVSS v3 base score is 4.3 out of 10.