CVE-2024-48949: The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig

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CRITICAL 9.1REMOTEUPGRADE

CVE-2024-48949 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.

The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg()" validation.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-347
Published	2024-10-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: indutny

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

Am I affected?

Timeline

2024-10-10 01:15 UTCPublished CVE record published
2026-06-17 07:59 UTCUpdated Record last modified

indutny elliptic UPGRADE

Affected: < 6.5.6

Fixed in: 6.5.6

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls elliptic

2. UPGRADE to 6.5.6

npm install elliptic@">=6.5.6"

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-2024-48949?

elliptic: upgrade to 6.5.6. Exact commands for each OS are on this page.

Is CVE-2024-48949 being exploited?

CVE-2024-48949 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-2024-48949 affect?

CVE-2024-48949 affects elliptic. Severity is critical (CVSS 9.1). The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg()" validation.

How urgent is CVE-2024-48949?

Priority 47/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities

Related CVEs

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-2024-42461 CRITICAL 9.1 DOWNGRADE In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures
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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