CVE-2026-4602

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-4602
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4602.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-4602
Aliases
Published
2026-03-23T05:00:10.567Z
Modified
2026-07-16T03:30:50.350239879Z
Severity
  • 7.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4602.json",
    "cwe_ids": [
        "CWE-681"
    ],
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "*"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "snyk"
}
References

Affected packages

Git / github.com/kjur/jsrsasign

Affected ranges

Type
GIT
Repo
https://github.com/kjur/jsrsasign
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e2b136e9eab7d571cb4a680ec10361ddc70fd573
Fixed
5ea1c32bb2aa894b4bd29849839afe4f98728195
Database specific 
{
    "cpe": "cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "11.1.1"
        }
    ]
}

Affected versions

1.*
1.2.0
1.3.0
1.3.1
10.*
10.0.0
10.0.1
10.0.2
10.0.3
10.0.4
10.0.5
10.1.0
10.1.1
10.1.10
10.1.11
10.1.12
10.1.13
10.1.2
10.1.3
10.1.4
10.1.5
10.1.8
10.1.9
10.2.0
10.3.0
10.3.1
10.3.2
10.4.0
10.4.1
10.5.0
10.5.1
10.5.10
10.5.11
10.5.12
10.5.13
10.5.14
10.5.15
10.5.16
10.5.17
10.5.18
10.5.19
10.5.2
10.5.20
10.5.21
10.5.22
10.5.23
10.5.24
10.5.25
10.5.26
10.5.27
10.5.3
10.5.4
10.5.5
10.5.6
10.5.7
10.5.8
10.5.9
10.6.0
10.6.1
10.7.0
10.8.0
10.8.1
10.8.2
10.8.3
10.8.4
10.8.5
10.8.6
10.9.0
11.*
11.0.0
11.1.0
2.*
2.0.0
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.1.0
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
4.*
4.0.0
4.0.1
4.0.2
4.0.3
4.0.4
4.0.5
4.1.0
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.2.0
4.2.1
4.2.2
4.2.3
4.5.0
4.6.0
4.7.0
4.7.1
4.7.2
4.8.0
4.8.1
4.8.2
4.8.3
4.8.5
4.8.6
4.9.0
4.9.1
4.9.2
5.*
5.0.0
5.0.1
5.0.10
5.0.11
5.0.12
5.0.13
5.0.14
5.0.15
5.0.2
5.0.4
5.0.5
5.0.6
5.0.7
5.0.8
5.0.9
5.1.0
6.*
6.0.0
6.0.1
6.1.0
6.1.1
6.1.2
6.1.4
6.2.0
6.2.1
6.2.2
6.2.3
7.*
7.0.0
7.1.0
7.1.1
7.1.2
7.1.3
7.1.4
7.2.0
7.2.1
7.2.2
8.*
8.0.0
8.0.1
8.0.10
8.0.11
8.0.12
8.0.13
8.0.14
8.0.15
8.0.16
8.0.17
8.0.18
8.0.19
8.0.2
8.0.20
8.0.21
8.0.22
8.0.23
8.0.24
8.0.3
8.0.4
8.0.5
8.0.6
8.0.7
8.0.8
8.0.9
9.*
9.0.0
9.0.1
9.0.2
9.0.3
9.1.0
9.1.1
9.1.2
9.1.4
9.1.5
9.1.6
9.1.7
9.1.8
9.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4602.json"