High
Security advisory
Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large number of ciphertexts encrypted with the same key. Workaround The vulnerability can be mitigated by finding and replacing RSA and RSAOAEP decryption with another crypto library.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-21484
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 18:17 UTC · Revision 1
Source evidence
Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large number of ciphertexts encrypted with the same key. Workaround The vulnerability can be mitigated by finding and replacing RSA and RSAOAEP decryption with another crypto library.
osv:CVE-2024-21484
Complete source record
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"id": "8b2b234a15a434b182ea8895718e31101eafeb3a1031c3be12bf4b39a5c079ec",
"url": "https://osv.dev/vulnerability/CVE-2024-21484",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2024-21484",
"summary": "Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large number of ciphertexts encrypted with the same key. Workaround The vulnerability can be mitigated by finding and replacing RSA and RSAOAEP decryption with another crypto library.",
"evidence": "osv:CVE-2024-21484",
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"aliases": [
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"modified": "2026-10-28T02:30:38.453194198Z",
"provider": "osv",
"references": [
"https://github.com/kjur/jsrsasign/releases/tag/11.0.0",
"https://people.redhat.com/~hkario/marvin/",
"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-6070734",
"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBKJUR-6070733",
"https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-6070732",
"https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-6070731",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/21xxx/CVE-2024-21484.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-21484",
"https://github.com/kjur/jsrsasign/issues/598"
],
"provider_metadata": {
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 505626,
"published_at": "2024-01-22T05:00:02.087+00:00"
}