CVE-2024-42461: In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures

Q: How do I fix CVE-2024-42461?

elliptic: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2024-42461 being exploited?

CVE-2024-42461 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-42461 affect?

CVE-2024-42461 affects elliptic. Severity is critical (CVSS 9.1). In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures are allowed.

Q: How urgent is CVE-2024-42461?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEDOWNGRADE

CVE-2024-42461 is a critical-severity flaw (CVSS 9.1) affecting elliptic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures are allowed.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-347
Published	2024-08-02
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: elliptic project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-08-02 07:16 UTCPublished CVE record published
2026-06-17 07:49 UTCUpdated Record last modified

elliptic project elliptic DOWNGRADE

Affected: 6.5.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.5.6

1. Check installed version

npm ls elliptic

2. No fixed release: DOWNGRADE to a release before 6.5.6

npm view elliptic versions npm install elliptic@"<6.5.6"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-42461?

elliptic: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-42461 being exploited?

CVE-2024-42461 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-42461 affect?

CVE-2024-42461 affects elliptic. Severity is critical (CVSS 9.1). In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures are allowed.

How urgent is CVE-2024-42461?

Priority 49/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

Related CVEs

CVE-2024-48949 CRITICAL 9.1 UPGRADE The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig
CVE-2024-48948 MEDIUM 4.8 DOWNGRADE The Elliptic package 6.5.7 for Node.js, in its for ECDSA implementation, does not correctly verify valid signa
CVE-2024-42460 MEDIUM 5.3 DOWNGRADE In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because there is a missing chec
CVE-2024-42459 MEDIUM 5.3 DOWNGRADE In the Elliptic package 6.5.6 for Node.js, EDDSA signature malleability occurs because there is a missing sign

References

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