EricLBuehler Mistral.rs up to 0.8.22 GGUF Tokenizer gguf_tokenizer.rs convert_gguf_to_hf_tokenizer eos_token_id/bos_token_id/unknown_token_id out-of-bounds

Summaryinfo

A vulnerability classified as problematic has been found in EricLBuehler Mistral.rs up to 0.8.22. This affects the function convert_gguf_to_hf_tokenizer of the file mistralrs-core/src/gguf/gguf_tokenizer.rs of the component GGUF Tokenizer. This manipulation of the argument eos_token_id/bos_token_id/unknown_token_id causes out-of-bounds. This vulnerability is tracked as CVE-2026-75090. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in EricLBuehler Mistral.rs up to 0.8.22. It has been declared as problematic. Affected by this vulnerability is the function convert_gguf_to_hf_tokenizer of the file mistralrs-core/src/gguf/gguf_tokenizer.rs of the component GGUF Tokenizer. The manipulation of the argument eos_token_id/bos_token_id/unknown_token_id with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-75090. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Upgrading to version 0.8.23 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch cd5297e2ea5cb27c790bdcf2f3c2f1064a81d55e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• EricLBuehler

Name

• Mistral.rs

Version

• 0.8.0
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4
• 0.8.5
• 0.8.6
• 0.8.7
• 0.8.8
• 0.8.9
• 0.8.10
• 0.8.11
• 0.8.12
• 0.8.13
• 0.8.14
• 0.8.15
• 0.8.16
• 0.8.17
• 0.8.18
• 0.8.19
• 0.8.20
• 0.8.21
• 0.8.22

License

• open-source

Website

• Product: https://github.com/EricLBuehler/mistral.rs/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Submitinfo

Accepted

• Submit #877270: EricLBuehler mistral.rs (mistralrs-core) 0.8.1 / HEAD eb31bf3 Out-of-bounds Read (by m00dy)

Be aware that VulDB is the high quality source for vulnerability data.

Discussion