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{"bugzilla": {"description": "jsrsasign: jsrsasign: Private Key Recovery via Missing Cryptographic Step in DSA Signing", "id": "2450209", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450209"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-325", "details": ["A flaw was found in jsrsasign. An attacker can exploit a missing cryptographic step in the Digital Signature Algorithm (DSA) signing process, specifically within the KJUR.crypto.DSA.signWithMessageHash function. By manipulating the signature generation to force specific values, the library emits an invalid signature without retrying. This vulnerability allows an attacker to recover the private key used for signing."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-4601", "package_state": [{"cpe": "cpe:/a:redhat:migration_toolkit_virtualization:2", "fix_state": "Affected", "package_name": "migration-toolkit-virtualization/mtv-console-plugin-rhel9", "product_name": "Migration Toolkit for Virtualization"}, {"cpe": "cpe:/a:redhat:migration_toolkit_virtualization:2", "fix_state": "Affected", "package_name": "mtv-candidate/mtv-console-plugin-rhel9", "product_name": "Migration Toolkit for Virtualization"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel8", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay/quay-rhel9", "product_name": "Red Hat Quay 3"}], "public_date": "2026-03-23T05:00:13Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4601\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4601\nhttps://gist.github.com/Kr0emer/93789fe6efe5519db9692d4ad1dad586\nhttps://github.com/kjur/jsrsasign/commit/0710e392ec35de697ce11e4219c988ba2b5fe0eb\nhttps://github.com/kjur/jsrsasign/pull/645\nhttps://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-15370941"], "statement": "IMPORTANT: A flaw in the jsrsasign library allows for private key recovery due to a missing cryptographic step in the Digital Signature Algorithm (DSA) signing process. An attacker can manipulate signature generation within the KJUR.crypto.DSA.signWithMessageHash function to force specific values, enabling the recovery of the private key. This impacts Red Hat products utilizing jsrsasign, such as Migration Toolkit for Virtualization and Red Hat Quay.", "threat_severity": "Important"}

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