CVE-2026-4599 | jsrsasign up to 11.1.0 Private Key src/crypto-1.1.js incomplete comparison with missing factors (SNYK-JS-JSRSASIGN-15370939)

VDB-352487 · CVE-2026-4599 · GCVE-0-2026-4599 JSRSASIGN UP TO 11.1.0 PRIVATE KEY SRC/CRYPTO-1.1.JS INCOMPLETE COMPARISON WITH MISSING FACTORS HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.0 $0-$5k 2.88+ Summaryinfo A vulnerability identified as critical has been detected in jsrsasign up to 11.1.0. This vulnerability affects the function getRandomBigIntegerZeroToMax/getRandomBigIntegerMinToMax of the file src/crypto-1.1.js of the component Private Key Handler. The manipulation leads to incomplete comparison with missing factors. This vulnerability is uniquely identified as CVE-2026-4599. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in jsrsasign up to 11.1.0. This issue affects the function getRandomBigIntegerZeroToMax/getRandomBigIntegerMinToMax of the file src/crypto-1.1.js of the component Private Key Handler. The manipulation with an unknown input leads to a incomplete comparison with missing factors vulnerability. Using CWE to declare the problem leads to CWE-1023. The product performs a comparison between entities that must consider multiple factors or characteristics of each entity, but the comparison does not include one or more of these factors. Impacted is confidentiality, integrity, and availability. The summary by CVE is: Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Missing Factors via the getRandomBigIntegerZeroToMax and getRandomBigIntegerMinToMax functions in src/crypto-1.1.js; an attacker can recover the private key by exploiting the incorrect compareTo checks that accept out-of-range candidates and thus bias DSA nonces during signature generation. It is possible to read the advisory at security.snyk.io. The identification of this vulnerability is CVE-2026-4599 since 03/22/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. 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: 8.2 VulDB Meta Temp Score: 8.0 VulDB Base Score: 7.3 VulDB Temp Score: 7.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.1 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: Incomplete comparison with missing factors CWE: CWE-1023 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined 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-15370939 Status: Confirmed CVE: CVE-2026-4599 (🔒) GCVE (CVE): GCVE-0-2026-4599 GCVE (VulDB): GCVE-100-352487 Entryinfo Created: 03/23/2026 07:15 Changes: 03/23/2026 07:15 (77) Complete: 🔍 Cache ID: 99:E17:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸