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Advisories

SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching

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Severity
high
Date
Affecting

  • sglang <= 0.5.22

CWE
  • CWE-187 Partial String Comparison
CVSS
8.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Mingkai Yu, Jiadai Wang, Qiang Fu, Jiajia Liu
Description
SGLang through 0.5.22 contains a denial of service vulnerability that allows API clients to abort other users' in-flight generation requests by supplying a short client-controlled rid. Attackers can submit streaming /generate requests with single hex character rids and disconnect, triggering prefix-matching abort logic that terminates all other clients' requests.

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