Vulnerability · Published Jul 1, 2025 · Assigned by GitHub_M

CVE-2024-49364tiny-secp256k1 vulnerable to private key extraction when signing a malicious JSON-stringifyable message in bundled environment

High 8.1

In plain English

A high-severity security flaw in tiny-secp256k1 from bitcoinjs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.1High

Exploit odds (30 days)0.4%top 69.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

tiny-secp256k1 is a tiny secp256k1 native/JS wrapper. Prior to version 1.1.7, a private key can be extracted on signing a malicious JSON-stringifiable object, when global Buffer is the buffer package. This affects only environments where require('buffer') is the NPM buffer package. The Buffer.isBuffer check can be bypassed, resulting in k reuse for different messages, leading to private key extraction over a single invalid message (and a second one for which any message/signature could be taken, e.g. previously known valid one). This issue has been patched in version 1.1.7.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	tiny-secp256k1	1.1.7	GHSA-7mc2-6phr-23xc

Affected products (as reported)

Vendor	Product	Versions
bitcoinjs	tiny-secp256k1	< 1.1.7

Weakness: CWE-522 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P

References

https://github.com/bitcoinjs/tiny-secp256k1/security/advisories/GHSA-7mc2-6phr-23xc x_refsource_CONFIRM
https://github.com/bitcoinjs/tiny-secp256k1/pull/140 x_refsource_MISC