sgl-project SGLang up to 0.5.22 Prefix-Matching Abort Logic rid denial of service

Summaryinfo

A vulnerability, which was classified as problematic, has been found in sgl-project SGLang up to 0.5.22. Affected by this vulnerability is an unknown functionality of the component Prefix-Matching Abort Logic. Performing a manipulation of the argument rid results in denial of service. This vulnerability is reported as CVE-2026-112266. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in sgl-project SGLang up to 0.5.22. It has been classified as problematic. This affects an unknown functionality of the component Prefix-Matching Abort Logic. The manipulation of the argument rid with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-112266 since 10/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Project Management Software

Vendor

• sgl-project

Name

• SGLang

Version

• 0.5.0
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.4
• 0.5.5
• 0.5.6
• 0.5.7
• 0.5.8
• 0.5.9
• 0.5.10
• 0.5.11
• 0.5.12
• 0.5.13
• 0.5.14
• 0.5.15
• 0.5.16
• 0.5.17
• 0.5.18
• 0.5.19
• 0.5.20
• 0.5.21
• 0.5.22

Website

• Product: https://github.com/sgl-project/sglang/

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