CVE-2026-92392
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curl HTTP/2 RST_STREAM Use After Free Vulnerability
Vulnerability report for CVE-2026-92392, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-14
Last updated on: 2026-10-18
Assigner: curl
Description
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| curl | curl | 8.22.0 |
| curl | curl | 8.21.0 |
| curl | curl | 8.20.0 |
| curl | curl | 8.19.0 |
| curl | curl | 8.18.0 |
| curl | curl | 8.17.0 |
| curl | curl | 8.16.0 |
| curl | curl | 8.15.0 |
| curl | curl | 8.14.1 |
| curl | curl | 8.14.0 |
| curl | curl | 8.13.0 |
| curl | curl | 8.12.1 |
| curl | curl | 8.12.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
