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CVE-2025-59334— Linkr allows manifest tampering leading to arbitrary file injection

Quick assessment

Affected
mohammadzain2008 Linkr
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linkr是Mohammad Zain个人开发者的一个文件传输系统。 Linkr 2.0.0及之前版本存在安全漏洞，该漏洞源于未验证.linkr清单文件的完整性和真实性，可能导致任意文件注入和远程代码执行。

CVSS 9.7 · Critical EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-59334

Vulnerability Information
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Vulnerability Title
Linkr allows manifest tampering leading to arbitrary file injection
Source: CVE Program / CVE List V5
Vulnerability Description
Linkr is a lightweight file delivery system that downloads files from a webserver. Linkr versions through 2.0.0 do not verify the integrity or authenticity of .linkr manifest files before using their contents, allowing a tampered manifest to inject arbitrary file entries into a package distribution. An attacker can modify a generated .linkr manifest (for example by adding a new entry with a malicious URL) and when a user runs the extract command the client downloads the attacker-supplied file without verification. This enables arbitrary file injection and creates a potential path to remote code execution if a downloaded malicious binary or script is later executed. Version 2.0.1 adds a manifest integrity check that compares the checksum of the original author-created manifest to the one being extracted and aborts on mismatch, warning if no original manifest is hosted. Users should update to 2.0.1 or later. As a workaround prior to updating, use only trusted .linkr manifests, manually verify manifest integrity, and host manifests on trusted servers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linkr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linkr是Mohammad Zain个人开发者的一个文件传输系统。 Linkr 2.0.0及之前版本存在安全漏洞，该漏洞源于未验证.linkr清单文件的完整性和真实性，可能导致任意文件注入和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
mohammadzain2008 Linkr < 2.0.1 -

II. Public POCs for CVE-2025-59334

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Qwen3.6-35B-A3B · 6881 chars
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III. Intelligence Information for CVE-2025-59334

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IV. Related Vulnerabilities

Same weakness: CWE-347

V. Comments for CVE-2025-59334

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