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CVE-2026-92392— HTTP/2 upload Use-After-Free

Quick assessment

Affected
curl curl
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在上传过程中，curl 错误地处理了服务器发来的 HTTP/2 帧（其原因为 或 ），从而导致对 对象的使用后释放（use-after-free）漏洞。

AI Predicted 6.5 Difficulty: Hard EPSS 0.63% · P49

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 13

VendorProduct Version RangeStatus
curl curl 8.22.0≤ 8.22.0 affected
8.21.0≤ 8.21.0 affected
8.20.0≤ 8.20.0 affected
8.19.0≤ 8.19.0 affected
8.18.0≤ 8.18.0 affected
8.17.0≤ 8.17.0 affected
8.16.0≤ 8.16.0 affected
8.15.0≤ 8.15.0 affected
… +5 more rows
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I. Basic Information for CVE-2026-92392

Vulnerability Information
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Vulnerability Title
HTTP/2 upload Use-After-Free
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
curl curl 8.22.0 ~ 8.22.0 -

II. Public POCs for CVE-2026-92392

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III. Intelligence Information for CVE-2026-92392

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Other References for CVE-2026-92392 (2)

Other References for CVE-2026-92392 (1)

IV. Related Vulnerabilities

Same product: curl
Same vendor: curl

V. Comments for CVE-2026-92392

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