CVE-2026-4601

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Source
https://cve.org/CVERecord?id=CVE-2026-4601
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4601.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-4601
Aliases
Published
2026-03-23T06:16:21.893Z
Modified
2026-04-02T13:32:09.275179Z
Severity
  • 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.

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
0710e392ec35de697ce11e4219c988ba2b5fe0eb
Database specific 
{
    "versions": [
        {
            "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-2026-4601.json"