This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-11352 →

ALPINE-CVE-2026-11352

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client....

Original description

The description as published by the source.

An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server
to trigger a remote denial of service against a curl or libcurl client.
Because the helper function discards zero-length UDP datagrams before counting
them toward the per-call packet budget, a connected QUIC peer can continuously
stream empty datagrams to indefinitely stall the client.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Alpine:v3.23 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"8.18.0"},{"fixed":"8.22.0-r0"}]}]

Alpine:v3.24 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"8.18.0"},{"fixed":"8.21.0-r0"}]}]

References

advisory security.alpinelinux.org