🛡️ CVE-2024-21484 — jsrsasign

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity none, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: None.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2024-21484 is classified as CWE-203: Observable Discrepancy. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

Affected software

CVE-2024-21484 is recorded against 1 package.

• jsrsasign

Timeline and source

Published on 19 January 2024 and last revised on 22 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
github.com (Web)
people.redhat.com (Web)
security.snyk.io (Web)
security.snyk.io (Web)
security.snyk.io (Web)
security.snyk.io (Web)

Other advisories for this package

jsrsasign has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-4602 (8.0 High, published 23 Mar 2026)
• CVE-2026-4601 (8.0 High, published 23 Mar 2026)
• CVE-2026-4600 (8.0 High, published 23 Mar 2026)
• CVE-2026-4599 (9.5 Critical, published 23 Mar 2026)
• CVE-2026-4598 (8.0 High, published 23 Mar 2026)
• CVE-2026-4603 (2.0 Low, published 23 Mar 2026)
• CVE-2022-25898 (8.0 High, published 25 Jun 2022)
• GHSA-h87q-g2wp-47pj (published 9 Feb 2022)

Same weakness in other software

These advisories are the same class of weakness (CWE-203: Observable Discrepancy) in other software:

• CVE-2026-58445 (2.7 Low, published 13 Aug 2026)
• CVE-2025-13736 (3.7 Low, published 6 Aug 2026)
• CVE-2026-59640 (published 3 Aug 2026)
• CVE-2026-67193 (5.3 Medium, published 29 Jul 2026)
• CVE-2026-55555 (7.5 High, published 28 Jul 2026)
• CVE-2026-64713 (8.1 High, published 27 Jul 2026)
• CVE-2025-54999 (2.0 Low, published 27 Jul 2026)
• CVE-2026-44332 (5.3 Medium, published 24 Jul 2026)

Details

Affected Packages

References