AIKIDO-2026-643359
undici is vulnerable to Denial of Service (DoS)
59
CVE Score
Medium
Denial of Service (DoS)
TL;DR
The retry handler leaves an already-exposed response body pending when a truncated successful response is retried and the retry returns a non-retryable status. The original body the application still holds is never ended or destroyed, so reads hang and bodyTimeout does not fire. A remote peer can repeat this to accumulate pending streams. The fix settles the original body when the handler replaces it.
How do I fix this?
Upgrade the undici library to the patch version.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use the retry handler.
Package
Versions
7.11.0 - 7.29.0
Fixed in 7.29.18.0.0 - 8.10.1
Fixed in 8.10.2Background info
undici is vulnerable to Denial of Service (DoS) in versions 7.11.0 - 7.29.0 and 8.0.0 - 8.10.1.
Links
GitHub Release
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