This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-10536 →

DEBIAN-CVE-2026-10536

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via `CURLOPT_STREAM_DEPENDS` or `CURL...

Original description

The description as published by the source.

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via CURLOPT_STREAM_DEPENDS or CURLOPT_STREAM_DEPENDS_E, subsequently invokes curl_easy_reset(), and finally terminates the handle with curl_easy_cleanup(). During this final cleanup phase, libcurl attempts to access and modify an internal structure that was already freed during the reset operation.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 curl

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.21.0~rc2-1"}]}]

References

advisory security-tracker.debian.org