CVE-2026-124028 | BDVDB-2026-401328 Detail
EricLBuehlermistral.rs
Description#
mistral.rs before 0.9.5 contains a delimiter injection vulnerability in mistralrs-core that allows attackers to inject tool calls by placing delimiter strings in text the model quotes. Attackers controlling documents, web pages or tool outputs can embed tags like </tool_call> to make qwen-xml, gemma4 or reasoning parsers return extra calls to declared tools with attacker-chosen arguments.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-140 Improper Neutralization of Delimiters
References#
- https://github.com/EricLBuehler/mistral.rs/commit/b43d3443e946752c0f662c2df42a2974410c9532
- https://github.com/EricLBuehler/mistral.rs
- https://github.com/EricLBuehler/mistral.rs/security/advisories/GHSA-34w8-j94f-8c5w
- https://github.com/EricLBuehler/mistral.rs/pull/2455
- https://github.com/EricLBuehler/mistral.rs/releases/tag/v0.9.5
- https://www.vulncheck.com/advisories/mistral-rs-before-0.9.5-tool-call-injection-via-mistralrs-core-output-parsers
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.