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CVE-2026-4600

Quick assessment

Affected
n/a jsrsasign
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.

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src/dsa-2.0.js中DSA域参数验证不当，可能导致伪造DSA签名或X.509证书。

CVSS 7.4 · High EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1553.003 · SIP and Trust Provider Hijacking

Affected Version Matrix 2

VendorProduct Version RangeStatus
n/a jsrsasign < 11.1.1 affected
n/a org.webjars.npm:jsrsasign < * affected
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I. Basic Information for CVE-2026-4600

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signature via the DSA domain-parameter validation in KJUR.crypto.DSA.setPublic (and the related DSA/X509 verification flow in src/dsa-2.0.js). An attacker can forge DSA signatures or X.509 certificates that X509.verifySignature() accepts by supplying malicious domain parameters such as g=1, y=1, and a fixed r=1, which make the verification equation true for any hash.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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
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src/dsa-2.0.js中DSA域参数验证不当，可能导致伪造DSA签名或X.509证书。
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
- jsrsasign 0 ~ 11.1.1 -
- org.webjars.npm:jsrsasign 0 ~ * -

II. Public POCs for CVE-2026-4600

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-4600

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Patches & Fixes for CVE-2026-4600 (2)

Vendor Advisories for CVE-2026-4600 (2)

Proof of Concept for CVE-2026-4600 (1)

Same Patch Batch · n/a · 2026-03-23 · 20 CVEs total

CVE-2026-4599 9.1 CRITICAL jsrsasign 安全漏洞
CVE-2026-4601 8.7 HIGH jsrsasign 安全漏洞
CVE-2026-4598 7.5 HIGH jsrsasign 安全漏洞
CVE-2026-4602 7.5 HIGH jsrsasign 安全漏洞
CVE-2026-4603 5.9 MEDIUM jsrsasign 安全漏洞
CVE-2026-4587 3.7 LOW HybridAuth SSL Curl.php certificate validation
CVE-2026-30006 XnSoft Nconvert 安全漏洞
CVE-2025-52204 Znuny 安全漏洞
CVE-2024-46879 Tiki 安全漏洞
CVE-2024-46878 Tiki 安全漏洞
CVE-2024-51224 PHPGurukul Vehicle Record Management System 安全漏洞
CVE-2026-30007 XnSoft Nconvert 安全漏洞
CVE-2026-24516 Droplet Agent 安全漏洞
CVE-2026-26829 OwnTone 安全漏洞
CVE-2026-26828 OwnTone 安全漏洞
CVE-2024-51222 PHPGurukul Vehicle Record Management System 安全漏洞
CVE-2024-51226 PHPGurukul Vehicle Record Management System 安全漏洞
CVE-2024-51223 PHPGurukul Vehicle Record Management System 安全漏洞
CVE-2024-51225 PHPGurukul Vehicle Record Management System 安全漏洞

IV. Related Vulnerabilities

Same product: jsrsasign
Same vendor: n/a
Same weakness: CWE-347

V. Comments for CVE-2026-4600

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