CVE-2026-4258

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Source
https://cve.org/CVERecord?id=CVE-2026-4258
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4258.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-4258
Aliases
Published
2026-03-17T05:00:04.199Z
Modified
2026-07-08T08:13:26.859390937Z
Severity
  • 7.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
[none]
Details

All versions of the package sjcl are vulnerable to Improper Verification of Cryptographic Signature due to missing point-on-curve validation in sjcl.ecc.basicKey.publicKey(). An attacker can recover a victim's ECDH private key by sending crafted off-curve public keys and observing ECDH outputs. The dhJavaEc() function directly returns the raw x-coordinate of the scalar multiplication result (no hashing), providing a plaintext oracle without requiring any decryption feedback.

Database specific 
{
    "cna_assigner": "snyk",
    "cwe_ids": [
        "CWE-347"
    ],
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "*"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4258.json"
}
References

Affected packages

Git / github.com/bitwiseshiftleft/sjcl

Affected ranges

Type
GIT
Repo
https://github.com/bitwiseshiftleft/sjcl
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
ee307459972442a17beebc29dc331fffd8aff796
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.0.8"
        }
    ],
    "cpe": "cpe:2.3:a:bitwiseshiftleft:stanford_javascript_crypto_library:*:*:*:*:*:node.js:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.0
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4258.json"