# CVE-2026-125366: Omnom through 0.9.0 SSRF via Add Feed /add_feed Route

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/asciimoo/omnom/commit/01c45510ab06c51bc952901514735b457a492f10

## Affected products and versions

- asciimoo / omnom (github.com/asciimoo/omnom): ≥ 0; ≤ 0.9.0 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 5.3 (medium); 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; source: CNA: VulnCheck

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-918

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/asciimoo/omnom/issues/67 (CNA: VulnCheck; issue-tracking)

- https://github.com/asciimoo/omnom (CNA: VulnCheck; product)

- https://github.com/asciimoo/omnom/blob/v0.9.0/feed/feed.go#L421 (CNA: VulnCheck; technical-description)

- https://github.com/asciimoo/omnom/commit/01c45510ab06c51bc952901514735b457a492f10 (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/omnom-through-0.9.0-ssrf-via-add-feed-add-feed-route (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-125366; retrieved 2026-11-10; source updated 2026-11-09

Revision: 572a5c48944a9a56e094b5de602c41c01d83e3daf08e9197f8f24fbc296d3adf

Canonical: https://y2.dev/cve/CVE-2026-125366

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