Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m)).

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a jsrsasign affected
Version Status Constraints
0 affected
< 11.1.1

No data.

No data.

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Subscriptions

No data.

Tracking

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gist.github.com/Kr0emer/a1bf5cd4547cc630d2dcc5e761de8264 cve-icon cve-icon
https://github.com/kjur/jsrsasign/commit/ca5b027240287a1e71fe63019fc4400332594323 cve-icon cve-icon
https://github.com/kjur/jsrsasign/pull/648 cve-icon cve-icon
https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370938 cve-icon cve-icon
History

Mon, 23 Mar 2026 05:45:00 +0000

Type Values Removed Values Added
Description Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function in ext/jsbn2.js when the BigInteger.modInverse implementation receives zero or negative inputs, allowing an attacker to hang the process permanently by supplying such crafted values (e.g., modInverse(0, m) or modInverse(-1, m)).
Weaknesses CWE-835
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: snyk

Published:

Updated: 2026-03-23T05:00:11.571Z

Reserved: 2026-03-22T16:25:51.590Z

Link: CVE-2026-4598

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-23T06:16:21.300

Modified: 2026-03-23T06:16:21.300

Link: CVE-2026-4598

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses