# CVE-2026-70620: Odysseus SSRF via Embedding Endpoint Configuration

Status: published. Published: 2026-08-04. Updated: 2026-11-08.

Odysseus before commit 87babb5 contains a server-side request forgery vulnerability that allows admin-privileged attackers to direct the server to probe internal network resources by supplying arbitrary URLs to the embedding endpoint configuration without scheme, host, IP range, or DNS rebind validation. Attackers can submit loopback addresses, RFC 1918 ranges, or link-local addresses through the embedding endpoint API to partially read responses from cloud instance metadata services, internal APIs, and other hosts reachable from the server.

## 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/odysseus-dev/odysseus/pull/1206
- 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/odysseus-dev/odysseus/commit/87babb58d57897089b133b313e2ab6d09e7ef54e

## Affected products and versions

- odysseus-dev / odysseus (odysseus-dev/odysseus): ≥ 0; < 87babb58d57897089b133b313e2ab6d09e7ef54e (affected, git). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.1 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 6.8 (medium); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.46% as of 2026-11-08; percentile 40.06%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-918

## Exploit evidence

- exploit: https://aydinnyunus.github.io/2026/06/16/odysseus-embedding-endpoint-takeover/ (CNA: VulnCheck)
- exploit: https://github.com/odysseus-dev/odysseus/issues/132 (CNA: VulnCheck)

## References

- https://aydinnyunus.github.io/2026/06/16/odysseus-embedding-endpoint-takeover/ (CNA: VulnCheck; technical-description, exploit)

- https://github.com/odysseus-dev/odysseus/issues/132 (CNA: VulnCheck; technical-description, exploit, issue-tracking)

- https://github.com/odysseus-dev/odysseus/pull/1206 (CNA: VulnCheck; issue-tracking, patch)

- https://github.com/odysseus-dev/odysseus/commit/87babb58d57897089b133b313e2ab6d09e7ef54e (CNA: VulnCheck; patch)

- https://www.vulncheck.com/advisories/odysseus-ssrf-via-embedding-endpoint-configuration (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-70620; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-70620; retrieved 2026-11-08; source updated Not reported

Revision: 65610518792e3376b3e2a79296875b00fdb7104b5e88c74cbeb0f986d88cc2ee

Canonical: https://y2.dev/cve/CVE-2026-70620

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