CVE-2026-72552 Dub Dub - Server-Side Request Forgery
Unauthenticated attackers can force the Dub server to make arbitrary HTTP requests, enabling internal service scanning and cloud metadata exfiltration.
- 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-2026-72552?
CVE-2026-72552 is a high-severity server-side request forgery vulnerability in Dub, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A server-side request forgery vulnerability in Dub as of 2026-07-10 allows unauthenticated remote attackers to make the server issue HTTP requests to arbitrary internal or external hosts via the metatags edge endpoint. The endpoint fetches any caller-supplied URL without applying a denylist or requiring authentication. An attacker can use this to scan internal services or exfiltrate data from cloud metadata endpoints.
Weakness: CWE-918
Which versions are affected by CVE-2026-72552?
How do I fix CVE-2026-72552?
No fix has been published for CVE-2026-72552 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-2026-72552 being exploited?
There is no known exploitation of CVE-2026-72552 in the wild and no public exploit code.
Sources
Also known as GHSA-gvqm-vjxp-3r33.