CVE-2026-100251 Wormhole.app SSRF
An unauthenticated attacker can exploit a misconfigured TURN server to access instance metadata or source TCP connections from the relay's IP.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100251?
CVE-2026-100251 is a medium-severity server-side request forgery vulnerability in Wormhole, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Wormhole.app as deployed before 2026-08-22 misconfigures the coturn TURN server and does not properly restrict TCP relay peers, allowing an unauthenticated attacker to access instance metadata or to source TCP connections from the Wormhole relay's IP.
Weakness: CWE-918
Which versions are affected by CVE-2026-100251?
How do I fix CVE-2026-100251?
No fix has been published for CVE-2026-100251 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-2026-100251 being exploited?
There is no known exploitation of CVE-2026-100251 in the wild and no public exploit code.
Sources
Also known as GHSA-7r4f-37cf-v9wq.