Use After Free in Ggml-org Llama.cpp
CVE-2026-43631
llama.cpp builds b7492 through the latest b9060 contains a use-after-free vulnerability in the vocab pointer of llama-server when the --sleep-idle-seconds feature is enabled, allowing unauthenticated remote attackers to execute arbitrary c…
Vulnerability class: Race Condition
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)
References
- disclosure@vulncheck.com (mitigation)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-43631?
- CVE-2026-43631 is a high-severity vulnerability in Ggml-org Llama.cpp, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.1/10. Published 2026-08-06.
- How severe is CVE-2026-43631?
- High severity. CVSS v3 base score is 8.1 out of 10.