CVE-2026-14890 — CRITICAL (9.1)

Q: How severe is CVE-2026-14890?

CVE-2026-14890 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-14890?

Check the references section above for vendor advisories and patch information. Affected products include: Lmsys Sglang.

Vulnerability 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.

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Lmsys	Sglang	<= 0.5.14

Related Weaknesses (CWE)

CWE-502

References

http://vince.cert.org/vuls/id/326070Permissions Required
https://github.com/sgl-project/sglang/blob/main/python/sglang/srt/elastic_ep/expProduct
https://www.kb.cert.org/vuls/id/326070MitigationThird Party Advisory

FAQ

What is CVE-2026-14890?

CVE-2026-14890 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 attack...

How severe is CVE-2026-14890?

CVE-2026-14890 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-14890?

Check the references section above for vendor advisories and patch information. Affected products include: Lmsys Sglang.