PT-2019-3451 · Wikimedia+1 · Mediawiki+1

Jcrespo · Published 2019-06-07 · Updated 2025-09-29 · CVE-2019-12473

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions MediaWiki versions 1.27.0 through 1.32.1

Description The issue is related to the transmission of invalid headers in the API, which can lead to a denial of service. An attacker could exploit this by passing invalid titles to the API, causing it to query the entire watchlist table. This could allow a remote attacker to cause a denial of service.

Recommendations For versions 1.27.0 through 1.27.5, update to version 1.27.6. For versions 1.30.0 through 1.30.1, update to version 1.30.2. For versions 1.31.0 through 1.31.1, update to version 1.31.2. For versions 1.32.0 through 1.32.1, update to version 1.32.2.

Exploit

Fix

Resource Exhaustion

RCE

Weakness Enumeration

CWE-400

CWE-20

Related Identifiers

ALSA-2025_16880

ALT-PU-2019-2016

ALT-PU-2019-2054

BDU:2019-03622

CVE-2019-12473

DSA-4460-1

GHSA-33XW-X3PR-RVQJ

MGASA-2019-0279

Affected Products

Alt Linux

Mediawiki

References · 23

• 🔥 https://github.com/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12473.yaml · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-12473 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12473 · Vendor Advisory
• https://lists.wikimedia.org/pipermail/wikitech-l/2019-June/092152.html · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2019-12473 · Security Note
• https://debian.org/security/2019/dsa-4460 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-33xw-x3pr-rvqj · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-03622 · Security Note
• https://cve.org/CVERecord?id=CVE-2019-12473 · Security Note
• https://advisories.mageia.org/MGASA-2019-0279.html · Security Note
• https://osv.dev/vulnerability/DSA-4460-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-12473 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12473 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0279 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12473 · Vendor Advisory