What is CVE-2020-35624?

CVE-2020-35624 is a medium-severity vulnerability in MediaWiki, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2020-12-21.

How severe is CVE-2020-35624?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in MediaWiki

CVE-2020-35624

An issue was discovered in the SecurePoll extension for MediaWiki through 1.35.1. The non-admin vote list contains a full vote timestamp, which may provide unintended clues about how a voting process unfolded.

Published 2020-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (62.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: +0.000

Affected products

MediaWiki

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

References

phabricator.wikimedia.org/T268794 (Permissions Required, Third Party Advisory)
gerrit.wikimedia.org/r/q/If8e15eb8ce9ec652c06816cbff52bb084fd50e73 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-35624?: CVE-2020-35624 is a medium-severity vulnerability in MediaWiki, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2020-12-21.
How severe is CVE-2020-35624?: Medium severity. CVSS v3 base score is 5.3 out of 10.