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MEDIUM

CVE-2024-21484

CVSS v3

5.9

MEDIUM

EPSS Score

1.0 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • jsrsasignnpmall versions · fixed in 11.0.0

Vendor advisories

  • CVE-2024-21484 Red Hat Product Security1 product fixed · 1 known affected

    jsrsasign: vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process

    quay/quay-rhel8 as a component of Red Hat Quay 3

  • RHBA-2024:0928 Red Hat Product Security1 product fixed

    Red Hat Bug Fix Advisory: MTV 2.5.5 Images

Full record on NVD

Description

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.

Technical details

Published
2024-01-22

Frequently asked questions

What is CVE-2024-21484?

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.

Is CVE-2024-21484 actively exploited?

Active exploitation of CVE-2024-21484 has not been confirmed. Its EPSS score was 1.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-21484?

CVE-2024-21484 has a CVSS v3 base score of 5.9 (MEDIUM severity).

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