CVE-2026-13706

UrlShortener extension url validation can be bypassed due to difference between php url parsing and WHATWG

CVSS 0 NONEEPSS 0.3%CWE-20

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 0EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Improper input validation vulnerability in Wikimedia Foundation UrlShortener. This vulnerability is associated with program files includes/UrlShortenerUtils.Php.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

Wikimedia Foundation · UrlShortener

References

https://phabricator.wikimedia.org/T418533