AIKIDO-2026-425386
mint is vulnerable to Allocation of Resources Without Limits or Throttling
63
Medium Risk
This Affects:
mintTL;DR
Mint's HTTP/2 client accumulates header block fragments from CONTINUATION frames and only checks the running byte total against the advertised maximum header list size. Zero length CONTINUATION frames add no bytes, so an untrusted server can send an unbounded stream of them after a headers frame that omits the END_HEADERS flag, growing memory without hitting the size check until the client process is exhausted and terminated. The fix accounts for zero length frames so the accumulation cannot grow without bound.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and use Mint as an HTTP/2 client against servers you do not fully control.
Background info
mint is vulnerable to Allocation of Resources Without Limits or Throttling in versions 0.1.0 - 1.9.1.
How to fix this
Upgrade the mint library to the patch version.
Links
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