A AegiFlow
HIGHCVSS 7.5

CVE-2018-7166

CVE-2018-7166 updated by NVD

Modified
2026-09-20
Sources
nvd

Summary

In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.

Affected packages

EcosystemPackageAffected versionsFixed versions
Node.jsnode.js[object Object]

References

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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