EUVD-2025-210973

UrlUtil.getBaseUrl builds the absolute URLs in a response — download links, icons, asset and API URLs — from the X-Forwarded-Host, X-Forwarded-Proto and X-Forwarded-Prefix request headers, with no check on whether the sender was a trusted proxy, falling back to the client-supplied Host header...

CVE-2025-12999

Open VSX is vulnerable to cache poisoning via UrlUtil.getBaseUrl , which constructs absolute URLs (download links, signatures, public keys) from X-Forwarded-Host , X-Forwarded-Proto , and X-Forwarded-Prefix headers without verifying the sender is a trusted proxy. A single unauthenticated request ...

CVE-2025-12999

UrlUtil.getBaseUrl builds the absolute URLs in a response — download links, icons, asset and API URLs — from the X-Forwarded-Host, X-Forwarded-Proto and X-Forwarded-Prefix request headers, with no check on whether the sender was a trusted proxy, falling back to the client-supplied Host header...

PT-2026-96056

Name of the Vulnerable Software and Affected Versions Open VSX affected versions not specified Description An unauthenticated remote attacker can poison the per-extension metadata cache by supplying crafted X-Forwarded-Host, X-Forwarded-Proto, and X-Forwarded-Prefix request headers. The...