🛡️ CVE-2026-58520 — mediawiki

🟡 CVSS 6.1 — Medium ✅ No Known Exploit CWE-601 NVD
6.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

URL redirection to untrusted site ('open redirect') vulnerability in The Wikimedia Foundation Mediawiki - UrlShortener Extension allows Cross-Site Flashing.

This issue affects Mediawiki - UrlShortener Extension: from * before 1.43.9, 1.44.6, 1.45.4.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

Weakness class

CVE-2026-58520 is classified as CWE-601: Open Redirect. A redirect target is taken from user input, so a trusted link can send the visitor to an attacker's site.

Affected software

CVE-2026-58520 is recorded against 1 package.

  • mediawiki (from 1.45.0 up to 1.45.4)

Timeline and source

Published on 1 July 2026 and last revised on 9 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

gerrit.wikimedia.org
phabricator.wikimedia.org

Details

Severity MEDIUM
CVSS Score 6.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE CWE-601
Public Exploit ✅ No
Source NVD
Published 2026-07-01
Updated 2026-08-11
Modified 2026-07-09
Fix URL N/A

Affected Packages

Software From version Fixed in
mediawiki 1.45.0 1.45.4

Similar Threats

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