All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-21524
• https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
• https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
• https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281