---
id: "CVE-2026-125366"
page: "https://infrastack.ai/live/CVE-2026-125366"
kind: "vulnerability"
aliases: ["CVE-2026-125366"]
title: "Omnom: authenticated users can make server fetch internal hosts via feed URLs"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["omnom", "package", "self-hosted"]
not_affected_if: ["no-untrusted-accounts"]
published_at: "2026-11-10T00:17:08+00:00"
first_seen_at: "2026-11-10T00:28:42+00:00"
updated_at: "2026-11-10T00:30:32+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-125366", "first_seen_at": "2026-11-10T00:28:42+00:00"}]
exploit_sources: []
---

# Omnom: authenticated users can make server fetch internal hosts via feed URLs

Link for people: https://infrastack.ai/live/CVE-2026-125366 (this .md is for agents)

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.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the Omnom version in use; the sources say versions through `0.9.0` are affected.
- Look for exposure of the `/add_feed` endpoint on instances reachable by users who hold accounts.

## Timeline

- 2026-11-10T00:28:42+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-125366

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/omnom-through-0.9.0-ssrf-via-add-feed-add-feed-route
- [fix] Patch: github.com https://github.com/asciimoo/omnom/commit/01c45510ab06c51bc952901514735b457a492f10

## From 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.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_