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CVE-2026-120644— CGI::Cookie versions before 5.00 for Perl allow cookie attribute injection via unvalidated path, domain and expires values

Quick assessment

Affected
CVE-2026-120644
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.

Perl 语言中 CGI::Cookie 模块 5.00 版本之前的版本存在漏洞，允许攻击者通过未经验证的 path、domain 和 expires 参数注入 Cookie 属性。 这些参数在写入 Set-Cookie 响应头时，未对分号或控制字符进行校验。若应用程序从用户请求数据中直接设置这些参数，攻击者便可借此向 Cookie 中添加其他属性（例如 Domain 或 SameSite）。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None < 5.00 affected

I. Basic Information for CVE-2026-120644

Vulnerability Information
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Vulnerability Title
CGI::Cookie versions before 5.00 for Perl allow cookie attribute injection via unvalidated path, domain and expires values
Source: CVE Program / CVE List V5
Vulnerability Description
CGI::Cookie versions before 5.00 for Perl allow cookie attribute injection via unvalidated path, domain and expires values. The path, domain and expires values are written into the Set-Cookie header without checking for semicolons or control characters. An application that sets them from request data can be made to add other cookie attributes, such as Domain or SameSite.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 5.00 -

II. Public POCs for CVE-2026-120644

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III. Intelligence Information for CVE-2026-120644

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Other References for CVE-2026-120644 (3)

IV. Related Vulnerabilities

Same weakness: CWE-116