Vulnerability-Lookup

GHSA-8V54-R9X8-P94V

Vulnerability from github – Published: 2026-10-19 15:32 – Updated: 2026-10-19 15:32

Details

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.

Severity

5.9 (Medium)


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

8.2 (High)


                  
                    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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-112266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-187"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-19T14:17:03Z",
    "severity": "HIGH"
  },
  "details": "SGLang through 0.5.22 contains a denial of service vulnerability that allows API clients to abort other users\u0027 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\u0027 requests.",
  "id": "GHSA-8v54-r9x8-p94v",
  "modified": "2026-10-19T15:32:39Z",
  "published": "2026-10-19T15:32:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112266"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/issues/41474"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/issues/45002"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/sglang-through-0.5.22-cross-request-abort-via-rid-prefix-matching"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-112266 (GCVE-0-2026-112266)

Vulnerability from cvelistv5 – Published: 2026-10-19 13:55 – Updated: 2026-10-19 14:21

Title

SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching

Summary

Severity

8.2 (High)


                        
                          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

5.9 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-19 14:21 UTC

CWE

CWE-187 - Partial String Comparison

Assigner

VulnCheck CNA under the mitre root

CNA scorecard B 84/100 over 7011 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/sgl-project/sglang/issues/45002	issue-tracking
https://github.com/sgl-project/sglang/issues/41474	issue-tracking
https://github.com/sgl-project/sglang/blob/v0.5.2…	technical-description
https://github.com/sgl-project/sglang/blob/v0.5.2…	technical-description
https://github.com/sgl-project/sglang/blob/v0.5.2…	technical-description
https://www.vulncheck.com/advisories/sglang-throu…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
sgl-project	sglang	Affected: 0 , ≤ 0.5.22 (semver)

Date Public

2026-10-18 13:20

Credits

Mingkai Yu Jiadai Wang Qiang Fu Jiajia Liu

Show details on NVD website

JSON

To clipboard

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  "containers": {
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                "id": "CVE-2026-112266",
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                  },
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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