CVE-2026-43632

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-07. the CNA's CVSS baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

llama.cpp builds b7492 through the latest b9060 contains a use-after-free vulnerability in llama-server affecting six tokenization endpoints (/tokenize, /detokenize, /infill, /apply-template, /rerank, and /anthropic/count_tokens) that bypass the task queue and access ctx_server.vocab directly on HTTP worker threads. Attackers can exploit a time-of-check-time-of-use race condition where the main thread destroys and frees vocab after the synchronization lock is released but before the handler finishes using it, causing a crash or potential code execution when --sleep-idle-seconds is configured.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 14, 2026

Advisory Details (1)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

GitHub - Vladimir-tokarev-cyera/llama-cpp-security-patches: Security patches for unpatched llama.cpp vulnerabilities (CVE-2026-43626 through CVE-2026-43632) — Cyera Research · GitHub

https://github.com/Vladimir-tokarev-cyera/llama-cpp-security-patches

Vendor Advisories for CVE-2026-43632(1)

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

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
llama.cpp10108+dfsg-1 ... 9951+dfsg-3 (50 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 29× in last 7d / 63× 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. 2026-08-20 19:50 UTCGHSA enrichment
  2. 2026-08-20 07:46 UTCGHSA enrichment
  3. 2026-08-19 19:42 UTCEG score recompute
  4. 2026-08-19 19:42 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-19 07:38 UTCGHSA enrichment
  7. 2026-08-18 19:34 UTCEG score recompute
  8. 2026-08-18 19:34 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 07:30 UTCGHSA enrichment
  11. 2026-08-17 19:25 UTCEG score recompute
  12. 2026-08-17 19:25 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 05:45 UTCGHSA enrichment
  15. 2026-08-16 17:26 UTCEG score recompute
  16. 2026-08-16 17:26 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 05:22 UTCEG score recompute
  19. 2026-08-16 05:22 UTCGHSA enrichment
  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 17:19 UTCGHSA enrichment
  22. 2026-08-15 05:15 UTCEG score recompute
  23. 2026-08-15 05:15 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 17:10 UTCEG score recompute
Show 38 more
  1. 2026-08-14 17:10 UTCGHSA enrichment
  2. 2026-08-14 15:08 UTCGHSA enrichment
  3. 2026-08-14 03:05 UTCEG score recompute
  4. 2026-08-14 03:05 UTCGHSA enrichment
  5. 2026-08-13 22:00 UTCEPSS rescore
  6. 2026-08-13 15:01 UTCGHSA enrichment
  7. 2026-08-13 02:58 UTCGHSA enrichment
  8. 2026-08-12 14:54 UTCEG score recompute
  9. 2026-08-12 14:54 UTCGHSA enrichment
  10. 2026-08-12 13:51 UTCEPSS rescore
  11. 2026-08-12 02:50 UTCGHSA enrichment
  12. 2026-08-11 14:46 UTCEG score recompute
  13. 2026-08-11 14:46 UTCGHSA enrichment
  14. 2026-08-11 13:43 UTCEPSS rescore
  15. 2026-08-11 02:43 UTCEG score recompute
  16. 2026-08-11 02:43 UTCGHSA enrichment
  17. 2026-08-11 00:00 UTCEPSS rescore
  18. 2026-08-10 14:39 UTCGHSA enrichment
  19. 2026-08-10 02:35 UTCGHSA enrichment
  20. 2026-08-09 14:31 UTCEG score recompute
  21. 2026-08-09 14:31 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 02:28 UTCEG score recompute
  24. 2026-08-09 02:28 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 14:24 UTCGHSA enrichment
  27. 2026-08-08 02:20 UTCEG score recompute
  28. 2026-08-08 02:20 UTCGHSA enrichment
  29. 2026-08-08 02:12 UTCEG score recompute
  30. 2026-08-08 02:12 UTCGHSA enrichment
  31. 2026-08-07 19:29 UTCEG score recompute
  32. 2026-08-07 19:29 UTCGHSA enrichment
  33. 2026-08-07 19:12 UTCEG score recompute
  34. 2026-08-07 19:12 UTCGHSA enrichment
  35. 2026-08-07 10:21 UTCEG score recompute
  36. 2026-08-07 10:21 UTCGHSA enrichment
  37. 2026-08-06 22:18 UTCEG score recompute
  38. 2026-08-06 22:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-43632?
CVE-2026-43632 is a high vulnerability published on August 6, 2026. llama.cpp builds b7492 through the latest b9060 contains a use-after-free vulnerability in llama-server affecting six tokenization endpoints (/tokenize, /detokenize, /infill, /apply-template, /rerank, and /anthropic/counttokens) that bypass the task queue and access ctxserver.vocab directly on HTTP…
When was CVE-2026-43632 disclosed?
CVE-2026-43632 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43632 actively exploited?
CVE-2026-43632 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 74.1% of all scored CVEs.
What is the CVSS score of CVE-2026-43632?
CVE-2026-43632 has a CVSS v4.0 base score of 8.1 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-43632?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43632, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43632

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