CVE-2026-92392
HighPublished
HTTP/2 upload Use-After-Free
- Published
- Oct 14, 2026
- Updated
- Oct 20, 2026
- Assigning CNA
- curl
- Evidence observed
- Nov 4, 2026
Primary CVSS
8.1/ 10High
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H1.3%
Low · next 30 days
- Percentile
- 70.2%
- Model date
- Nov 4, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
Checks local curl/libcurl builds for CVE-2026-92392 HTTP/2 upload use-after-free exposure, with passive inventory, mounted-image scanning, and a bounded loopback PoC probe.
Responsible use
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