CVE-2026-92972 SGLang - Broken Access Control

SGLang through 0.5.19 contains an insecure endpoint in prefill bootstrap service allowing unauthenticated attackers to poison KV transfer routing table by supplying arbitrary rank_ip and rank_port, causing denial of service or information disclosure.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.47% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Denial Of Service, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Update to the latest version beyond 0.5.19.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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