AIKIDO-2026-568022
stream-json is vulnerable to Denial of Service (DoS)
62
Medium Risk
This Affects:
stream-jsonTL;DR
The JSONC parser and verifier scan the whole accumulated comment text on every input chunk instead of resuming from the previous scan position. A single comment split across many chunks is re-scanned repeatedly, so a comment of length n costs O(n^2) CPU and stalls the event loop for seconds on a multi-megabyte comment. The fix processes comments as chunked startComment/commentChunk/endComment tokens so scanning resumes across chunks in linear time.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use the JSONC parser or verifier (stream-json/jsonc/*) to process untrusted input.
Background info
stream-json is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 3.5.0.
How to fix this
Upgrade the stream-json library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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