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I. Basic Information for CVE-2026-4602
Vulnerability Information

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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types due to handling negative exponents in ext/jsbn2.js. An attacker can force the computation of incorrect modular inverses and break signature verification by calling modPow with a negative exponent.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
数值类型间的不正确转换
Source: NVD (National Vulnerability Database)
Vulnerability Title
jsrsasign 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jsrsasign是Kenji Urushima个人开发者的一个签名验证库。 jsrsasign 11.1.1之前版本存在安全漏洞,该漏洞源于ext/jsbn2.js中处理负指数时存在数值类型转换错误,可能导致签名验证被破坏。
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
VendorProductAffected VersionsCPESubscribe
-jsrsasign 0 ~ 11.1.1 -
II. Public POCs for CVE-2026-4602
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 8533 chars
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III. Intelligence Information for CVE-2026-4602
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IV. Related Vulnerabilities
V. Comments for CVE-2026-4602

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