What’s Vulnerable › Vulnerabilities

CVE-2026-112266: SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-19
• Weakness: CWE-187

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.

Affected products

• SGLang: through 0.5.22

References

• https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590
• https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256
• https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436
• https://github.com/sgl-project/sglang/issues/41474
• https://github.com/sgl-project/sglang/issues/45002
• https://www.vulncheck.com/advisories/sglang-through-0.5.22-cross-request-abort-via-rid-prefix-matching
• https://github.com/sgl-project/sglang/issues/41474

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