CVE-2026-14890 CVE-2026-14890
Unauthenticated remote code execution via malicious pickle deserialization in SGLang's expert-parallel backup subsystem when enabled and network-reachable.
- 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-2026-14890?
CVE-2026-14890 is a critical unsafe deserialization vulnerability in SGLang, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
SGLang uses an expert-parallel backup subsystem that exposes a ZeroMQ PULL socket on a routable network interface that does not contain authentication or deserialization safeguards, allowing an attacker to provide a malicious pickle file that results in unauthenticated remote code execution when the feature is enabled and the service is reachable over the network.
Weakness: CWE-502
Which versions are affected by CVE-2026-14890?
It affects 1 product.
Products include Lmsys Sglang.
How do I fix CVE-2026-14890?
No fix has been published for CVE-2026-14890 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-14890 being exploited?
There is no known exploitation of CVE-2026-14890 in the wild and no public exploit code.
Other vulnerabilities in SGLang
Sources
Also known as GHSA-67x7-pm2x-m2cf.