CVE-2026-4600 | jsrsasign up to 11.1.0 Domain src/dsa-2.0.js KJUR.crypto.DSA.setPublic signature verification (SNYK-JS-JSRSASIGN-15370940)

VDB-352488 · CVE-2026-4600 · GCVE-0-2026-4600 JSRSASIGN UP TO 11.1.0 DOMAIN SRC/DSA-2.0.JS KJUR.CRYPTO.DSA.SETPUBLIC SIGNATURE VERIFICATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.4 $0-$5k 3.26+ Summaryinfo A vulnerability labeled as problematic has been found in jsrsasign up to 11.1.0. This issue affects the function KJUR.crypto.DSA.setPublic of the file src/dsa-2.0.js of the component Domain Handler. The manipulation results in signature verification. This vulnerability was named CVE-2026-4600. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded. Detailsinfo A vulnerability, which was classified as problematic, was found in jsrsasign up to 11.1.0. Affected is the function KJUR.crypto.DSA.setPublic of the file src/dsa-2.0.js of the component Domain Handler. The manipulation with an unknown input leads to a signature verification vulnerability. CWE is classifying the issue as CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: 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. The advisory is shared for download at security.snyk.io. This vulnerability is traded as CVE-2026-4600 since 03/22/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. It is declared as proof-of-concept. Upgrading to version 11.1.1 eliminates this vulnerability. Productinfo Name jsrsasign Version 11.0 11.1.0 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.5 VulDB Meta Temp Score: 6.4 VulDB Base Score: 5.6 VulDB Temp Score: 5.4 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.4 CNA Vector (snyk): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Signature verification CWE: CWE-347 / CWE-345 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Proof-of-Concept Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: jsrsasign 11.1.1 Timelineinfo 03/22/2026 CVE reserved 03/23/2026 +1 days Advisory disclosed 03/23/2026 +0 days VulDB entry created 03/23/2026 +0 days VulDB entry last update Sourcesinfo Advisory: SNYK-JS-JSRSASIGN-15370940 Status: Confirmed CVE: CVE-2026-4600 (🔒) GCVE (CVE): GCVE-0-2026-4600 GCVE (VulDB): GCVE-100-352488 Entryinfo Created: 03/23/2026 07:15 Changes: 03/23/2026 07:15 (78) Complete: 🔍 Cache ID: 99:F16:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸