CVE-2024-21484

MEDIUM
5.9
CVSS Score
Published: January 22, 2024 at 05:00 AM UTC
Updated: June 22, 2026 at 03:18 AM UTC
1 product affected across 1 vendorJsrsasign

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Severity
MEDIUM5.9
Exploit prediction
EPSS 1.0%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 11.0.0
Affected range stops below 11.0.0, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-203

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