CVE-2026-19765 eyaushev swagger-testcase-mcp fetch_swagger swagger-parser.ts loadSource server-side request forgery
Remote attackers can exploit a server-side request forgery flaw in the swagger-testcase-mcp tool to access internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19765?
CVE-2026-19765 is a medium-severity server-side request forgery vulnerability in eyaushev swagger-testcase-mcp, published on 14 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in eyaushev swagger-testcase-mcp 5babb27c951fb404bc2b25ec80593616e49054e5. This vulnerability affects the function loadSource of the file src/utils/swagger-parser.ts of the component fetch_swagger. Performing a manipulation results in server-side request forgery. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-918
Which versions are affected by CVE-2026-19765?
How do I fix CVE-2026-19765?
No fix has been published for CVE-2026-19765 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-19765 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19765 exists.
Sources
Also known as GHSA-4324-vhrx-x39p.