CVE-2026-4603

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Source
https://cve.org/CVERecord?id=CVE-2026-4603
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4603.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-4603
Aliases
Published
2026-03-23T05:00:14Z
Modified
2026-10-28T02:31:13Z
Severity
  • 2.0 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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 Division by zero due to the RSASetPublic/KEYUTIL parsing path in ext/rsa.js and the BigInteger.modPowInt reduction logic in ext/jsbn.js. An attacker can force RSA public-key operations (e.g., verify and encryption) to collapse to deterministic zero outputs and hide “invalid key” errors by supplying a JWK whose modulus decodes to zero.

Database specific 
{
    "cna_assigner":  "snyk",
    "cwe_ids":  [
        "CWE-369"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4603.json"
}
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
dc41d49fac4297e7a737a3ef8ebd0aa9c49ef93f
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "11.1.1"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "dc41d49fac4297e7a737a3ef8ebd0aa9c49ef93f"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

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-2026-4603.json"