# CVE-2026-70620 — odysseus-dev odysseus

> As of 2026-08-05, CVE-2026-70620 is a MEDIUM-severity vulnerability in odysseus-dev odysseus, CVSS v3.1 6.8, EPSS 0.2% (18.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-70620 as of 2026-08-05; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-08-05

## What is CVE-2026-70620?

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.

The record classifies CVE-2026-70620 under weakness class [CWE-918](https://intel.threadlinqs.com/cwe/CWE-918). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 62 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.8 — MEDIUM (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N`)
- **CVSS v4.0 base score:** 6.1 (`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`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 18.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-04, last modified 2026-08-05

## Is CVE-2026-70620 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **odysseus-dev**: odysseus

## How to fix CVE-2026-70620

No vendor patch reference has been recorded for CVE-2026-70620 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-70620

No threat campaign in the Threadlinqs corpus currently references CVE-2026-70620, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-08-06. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — patch](https://github.com/odysseus-dev/odysseus/commit/87babb58d57897089b133b313e2ab6d09e7ef54e)

**Exploit and proof of concept**

- [aydinnyunus.github.io — technical description](https://aydinnyunus.github.io/2026/06/16/odysseus-embedding-endpoint-takeover/)
- [github.com — technical description](https://github.com/odysseus-dev/odysseus/issues/132)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/odysseus-ssrf-via-embedding-endpoint-configuration)

**Issue tracking and product pages**

- [github.com — issue tracking](https://github.com/odysseus-dev/odysseus/pull/1206)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-70620
Full detection coverage and IOCs for threats exploiting CVE-2026-70620 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp