CVE-2026-112108: ztxz16 fastllm String Parsing gguf.cpp ReadString buffer overflow

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-19 · updated 2026-10-22
Weakness: CWE-119

Description

A vulnerability was determined in ztxz16 fastllm up to 0.1.8.2. This impacts the function GGUFBuffer::ReadString of the file third_party/gguf/gguf.cpp of the component String Parsing. This manipulation of the argument len causes buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

ztxz16 fastllm: 0.1.8.0, 0.1.8.1, 0.1.8.2

References

https://github.com/user-attachments/files/33027563/poc.zip
https://github.com/ztxz16/fastllm/
https://github.com/ztxz16/fastllm/issues/759
https://vuldb.com/cve/CVE-2026-112108
https://vuldb.com/submit/1013191
https://vuldb.com/vuln/422102
https://vuldb.com/vuln/422102/cti

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