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CVE-2026-8704— Crypt::DSA versions through 1.19 for Perl use 2-args open, allowing existing files to be modified

Quick assessment

Affected
TIMLEGGE Crypt::DSA
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Crypt::DSA是TIMLEGGE个人开发者的一个支持DSA数字签名生成与验证功能的Perl密码学模块。 Crypt::DSA 1.19及之前版本存在安全漏洞，该漏洞源于使用2-args open，可能导致修改现有文件。

AI Predicted 5.3 Difficulty: Moderate EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TIMLEGGE Crypt::DSA ≤ 1.19 affected
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I. Basic Information for CVE-2026-8704

Vulnerability Information
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Vulnerability Title
Crypt::DSA versions through 1.19 for Perl use 2-args open, allowing existing files to be modified
Source: CVE Program / CVE List V5
Vulnerability Description
Crypt::DSA versions through 1.19 for Perl use 2-args open, allowing existing files to be modified.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对外部实体的文件或目录可访问
Source: CVE Program / CVE List V5
Vulnerability Title
Crypt::DSA 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Crypt::DSA是TIMLEGGE个人开发者的一个支持DSA数字签名生成与验证功能的Perl密码学模块。 Crypt::DSA 1.19及之前版本存在安全漏洞，该漏洞源于使用2-args open，可能导致修改现有文件。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TIMLEGGE Crypt::DSA 0 ~ 1.19 -

II. Public POCs for CVE-2026-8704

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III. Intelligence Information for CVE-2026-8704

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News Coverage for CVE-2026-8704 (1)

Other References for CVE-2026-8704 (1)

IV. Related Vulnerabilities

Same product: Crypt::DSA
Same vendor: TIMLEGGE
Same weakness: CWE-552

V. Comments for CVE-2026-8704

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