AIKIDO-2026-419071
libcurl is vulnerable to Denial of Service (DoS)
37
Low Risk
This Affects:
libcurlTL;DR
The QUIC UDP receive path drops zero length datagrams before they count toward the per call packet budget. An HTTP/3 server can stream empty datagrams and keep the client in that receive loop without the budget ever expiring, so the transfer never makes progress. The fix counts those empty datagrams toward the budget.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use HTTP/3.
Background info
libcurl is vulnerable to Denial of Service (DoS) in versions 8.18.0 - 8.20.0.
How to fix this
Upgrade the libcurl and/or the curl.curl library to the patch version.
Links
GitHub Release
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
FedRAMPImplementing© All Intel data is openly available and commercially licensed.