Vulnerability Intelligence Report
llama.cpp before b11393 Use-After-Free via common_chat_peg_mapper chat_parser
CVE-2026-107183
llama.cpp before b11393 contains a use-after-free and double free vulnerability in common_chat_peg_mapper::map that allows unauthenticated remote attackers to corrupt heap memory via a dangling current_tool pointer. Attackers can submit a chat_parser in a POST /completion request emitting a tool-id after a tool-close tag to crash llama-server and shape a heap write primitive.
No Active Exploit Signals
CVSS Base Score
9.2
CRITICAL
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-416 ↗Use After Free
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| ggml-org | llama.cpp | b8227 < b11393 (affected), b11393 (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2026-10-07T13:04:03 |
| Published | 2026-10-07T13:35:41 |
| Patch Date | 2026-10-04 |
| Last Updated | 2026-10-07T14:37:12 |
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