Bug 2460237 (CVE-2026-40879) - CVE-2026-40879 nest: Nest: Denial of Service via recursive JSON message handling
Summary: CVE-2026-40879 nest: Nest: Denial of Service via recursive JSON message handling
Keywords:
Status: NEW
Alias: CVE-2026-40879
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2461092
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-21 20:02 UTC by OSIDB Bzimport
Modified: 2026-04-23 10:28 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-04-21 20:02:42 UTC 
Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.
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