CVE-2026-58520
UrlShortener defaults to ineffective validation open to third-party redirects
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.
INFO
Published Date :
July 1, 2026, 5:14 p.m.
Last Modified :
July 1, 2026, 5:14 p.m.
Remotely Exploit :
Yes !
Source :
wikimedia-foundation
Affected Products
The following products are affected by CVE-2026-58520
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc | ||||
| CVSS 4.0 | MEDIUM | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc |
Solution
- Update the UrlShortener Extension to version 1.43.9 or later.
- Apply the security patch for your specific version.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-58520 vulnerability anywhere in the article.