Heap-based Buffer Overflow Affecting nodejs package, versions [0,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published12 Nov 2026
- disclosed11 Nov 2026
- creditzonduu
Introduced: 11 Nov 2026
NewCVE-2026-123828 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow n the Http2Session.altsvc() method, which allocates a buffer sized to the origin length and then writes a null terminator one byte past the end of it. An attacker can corrupt process memory and abort the process by sending an HTTP/2 request with a long :authority header. Only applications that pass an attacker-controlled value, such as the request's :authority header, to Http2Session.altsvc() are affected.