Exploit for CVE-2026-92392

What happened

During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after free of a `struct Curl_easy` object.

Affected versions

curl: 8.22.0 through 8.22.0 (semver); 8.21.0 through 8.21.0 (semver); 8.20.0 through 8.20.0 (semver); 8.19.0 through 8.19.0 (semver); 8.18.0 through 8.18.0 (semver); 8.17.0 through 8.17.0 (semver); 8.16.0 through 8.16.0 (semver); 8.15.0 through 8.15.0 (semver); 8.14.1 through 8.14.1 (semver); 8.14.0 through 8.14.0 (semver); 8.13.0 through 8.13.0 (semver); 8.12.1 through 8.12.1 (semver); 8.12.0 through 8.12.0 (semver) Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

• Review the original advisory and validate affected versions.
• Apply vendor-provided updates or mitigations when available.