CVE-2025-11915 HTTP Desynchronisation in Vertex AI for certain third-party models
HTTP desynchronization in Vertex AI proxies could allow request smuggling, but Google has already patched all affected proxies.
- 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-2025-11915?
CVE-2025-11915 is a medium-severity vulnerability in Google Cloud Vertex AI: Open Models for MaaS, published on 22 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Connection desynchronization between an HTTP proxy and the model backend. The fixes were rolled out for all proxies in front of impacted models by 2025-09-28. Users do not need to take any action.
Weakness: CWE-444
Which versions are affected by CVE-2025-11915?
How do I fix CVE-2025-11915?
No fix has been published for CVE-2025-11915 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-11915 being exploited?
There is no known exploitation of CVE-2025-11915 in the wild and no public exploit code.
Sources
Also known as GHSA-cwmv-37m7-7829.