---
id: CVE-2026-112108
title: ztxz16 fastllm String Parsing gguf.cpp ReadString buffer overflow
summary: >-
  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 o…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'
cvssSource: cna
cwe:
  - CWE-120
  - CWE-119
vendor: ztxz16
product: fastllm
affected:
  - fastllm 0.1.8.0
  - fastllm 0.1.8.1
  - fastllm 0.1.8.2
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T11:15:20.037Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112108'
references:
  - url: 'https://vuldb.com/vuln/422102'
    label: >-
      VDB-422102 | ztxz16 fastllm String Parsing gguf.cpp ReadString buffer
      overflow
  - url: 'https://vuldb.com/vuln/422102/cti'
    label: 'VDB-422102 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-112108'
    label: CVE-2026-112108 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1013191'
    label: >-
      Submit #1013191 | ztxz16 fastllm up to v0.1.8.2 and git master 05284b4e
      (analyzed at commit 324b4d1) Heap-based Buffer Overflow
  - url: 'https://github.com/ztxz16/fastllm/issues/759'
  - url: 'https://github.com/user-attachments/files/33027563/poc.zip'
  - url: 'https://github.com/ztxz16/fastllm/'
tags:
  - cve.org
ingestedAt: '2026-10-19T12:27:23.802Z'
---

## Overview

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

- `fastllm 0.1.8.0`
- `fastllm 0.1.8.1`
- `fastllm 0.1.8.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.