CVE-2026-100652

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.9Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

vLLM versions 0.22.0 through 0.23.0 fail to validate stop_token_ids against vocabulary bounds in Rust HTTP and gRPC frontends, allowing out-of-vocabulary token IDs to reach MinTokensLogitsProcessor. Attackers can submit requests with min_tokens greater than zero and out-of-vocabulary stop_token_ids to trigger CUDA tensor indexing failures that leave EngineCore in a fatal state requiring service restart.

CVSS v3
5.9
EG Score
5.9MEDIUMhigh confidence
EG Risk
27
EG Risk 27/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 26, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

vLLM 0.22.0 through 0.23.0 Denial of Service via stop_token_ids | Advisories | VulnCheck

https://www.vulncheck.com/advisories/vllm-0.22.0-through-0.23.0-denial-of-service-via-stop-token-ids
github Patch Available🟡 PoC Available

Rust HTTP/gRPC stop_token_ids bypass Python vocab-bound fix and can terminate EngineCore · Advisory · vllm-project/vllm · GitHub

https://github.com/vllm-project/vllm/security/advisories/GHSA-qff2-492f-9fm4

Vendor Advisories for CVE-2026-100652(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 27× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-03 23:34 UTCEG score recompute
  2. 2026-10-03 23:34 UTCGHSA enrichment
  3. 2026-10-03 14:25 UTCEPSS rescore
  4. 2026-10-02 23:14 UTCEG score recompute
  5. 2026-10-02 23:14 UTCGHSA enrichment
  6. 2026-10-01 22:52 UTCEG score recompute
  7. 2026-10-01 22:52 UTCGHSA enrichment
  8. 2026-10-01 19:49 UTCEPSS rescore
  9. 2026-09-30 22:32 UTCEG score recompute
  10. 2026-09-30 22:32 UTCGHSA enrichment
  11. 2026-09-30 15:02 UTCEPSS rescore
  12. 2026-09-29 22:13 UTCGHSA enrichment
  13. 2026-09-29 18:13 UTCEG score recompute
  14. 2026-09-29 18:13 UTCGHSA enrichment
  15. 2026-09-29 15:20 UTCEPSS rescore
  16. 2026-09-28 17:42 UTCEG score recompute
  17. 2026-09-28 17:42 UTCGHSA enrichment
  18. 2026-09-28 17:00 UTCEG score recompute
  19. 2026-09-28 17:00 UTCGHSA enrichment
  20. 2026-09-28 15:17 UTCEG score recompute
  21. 2026-09-28 15:17 UTCGHSA enrichment
  22. 2026-09-28 13:50 UTCEPSS rescore
  23. 2026-09-27 14:57 UTCEG score recompute
  24. 2026-09-27 14:57 UTCGHSA enrichment
  25. 2026-09-26 14:34 UTCEG score recompute
Show 2 more
  1. 2026-09-26 13:38 UTCEG score recompute
  2. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100652?
CVE-2026-100652 is a medium vulnerability published on September 26, 2026. vLLM versions 0.22.0 through 0.23.0 fail to validate stoptokenids against vocabulary bounds in Rust HTTP and gRPC frontends, allowing out-of-vocabulary token IDs to reach MinTokensLogitsProcessor. Attackers can submit requests with mintokens greater than zero and out-of-vocabulary stoptoken_ids to…
When was CVE-2026-100652 disclosed?
CVE-2026-100652 was first published on September 26, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100652 actively exploited?
CVE-2026-100652 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100652?
CVE-2026-100652 has a CVSS base score of 5.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100652?
A fix for CVE-2026-100652 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100652 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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