CVE-2026-125366 · Package
NO FIX YET
Omnom through 0.9.0 lets a logged-in user submit feed URLs to /add_feed, and the server fetches them without checking the destination. An attacker can point those requests at internal addresses and read reflected error messages to map internal hosts and ports.
first public Nov 10, 2026 · 1 source
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Teams that self-host Omnom and let users with accounts add feeds. The flaw sits in the feed-adding path, which fetches arbitrary user-supplied URLs server-side. Instances where only trusted admins can log in are at lower risk, but the sources do not say more.
Not affected if no-untrusted-accounts
Who cares omnom, self-hosted
0.9.0 are affected./add_feed endpoint on instances reachable by users who hold accounts.No fix yet, per the sources.
Omnom through 0.9.0 contains a server-side request forgery vulnerability that allows authenticated users to make server requests to arbitrary hosts by submitting feed URLs to /add_feed. Attackers can supply internal addresses that getFeedInfo, gofeed ParseURL, and fetchImageAsInlineURL fetch without validation, using reflected error messages to probe internal hosts and ports.
This page as .md · .json · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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