HIGH 8.4 NVD
CVE-2026-73629
Serendipity before 2.6.0 contains a server-side request forgery vulnerability in the serendipity_url_allowed() filter that fails to block hex-encoded IPv4 addre
Serendipity before 2.6.0 contains a server-side request forgery vulnerability in the serendipity_url_allowed() filter that fails to block hex-encoded IPv4 addresses, IPv6 literals, and link-local ranges. Authenticated users with adminImagesAdd permission can bypass the filter using alternate address formats to request internal services and retrieve response bodies through the public uploads directory.
References
- https://github.com/s9y/Serendipity/security/advisories/GHSA-2m48-gjj5-5x86
- https://www.vulncheck.com/advisories/serendipity-before-ssrf-via-hex-ipv4-and-ipv6-address
This high severity vulnerability with a CVSS score of 8.4 was published on 2026-08-13 via NVD.
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