What is CVE-2026-43632?

CVE-2026-43632 is a high-severity vulnerability in Ggml-org Llama.cpp, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.1/10. Published 2026-08-06.

How severe is CVE-2026-43632?

High severity. CVSS v3 base score is 8.1 out of 10.

Use After Free in Ggml-org Llama.cpp

CVE-2026-43632

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 bypa…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ggml-org Llama.cpp — versions b7492

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition
CWE-416 — Use After Free

References

disclosure@vulncheck.com (mitigation)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-43632?: CVE-2026-43632 is a high-severity vulnerability in Ggml-org Llama.cpp, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.1/10. Published 2026-08-06.
How severe is CVE-2026-43632?: High severity. CVSS v3 base score is 8.1 out of 10.