CVE-2026-92390— -J no-clobber guarantee bypassed with 103 early hints
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.
当使用 （ ）选项调用 curl 时，若中间出现 103 Early Hints 响应先于最终 HTTP 响应，或在 模式下 头在 头之前被处理，curl 将未能保持其文档中声明的防覆盖保护机制。此缺陷使得 HTTP(S) 服务器能够无视 选项所设定的非覆盖约束，通过 头中的文件名覆盖本地已存在的文件。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-92390
Vulnerability Information
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Vulnerability Title
-J no-clobber guarantee bypassed with 103 early hints
Source: CVE Program / CVE List V5
Vulnerability Description
When invoked with `--remote-header-name` (`-J`), curl fails to preserve its
documented anti-clobbering protection if an intermediate 103 Early Hints
response precedes the final HTTP response, or if an `ETag` header is processed
before `Content-Disposition` under `--etag-save`. This flaw allows an HTTP(S)
server to overwrite an existing local file specified in the
`Content-Disposition` header despite the presence of the `-J` non-overwrite
constraint.
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
II. Public POCs for CVE-2026-92390
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Pages for CVE-2026-92390 (2)
Other References for CVE-2026-92390 (1)
Same Patch Batch · curl · 2026-10-20 · 23 CVEs total
| CVE-2026-92391 | curl_mime_free stack overflow by recursion | |
| CVE-2026-107928 | info leak uploading over WebSockets with GnuTLS | |
| CVE-2026-107929 | local interface connection reuse mixup | |
| CVE-2026-94266 | password leak in CURLINFO_EFFECTIVE_URL | |
| CVE-2026-94265 | Authorization: Negotiate sent to foreign origin | |
| CVE-2026-86415 | auto client cert connection reuse mixup | |
| CVE-2026-86414 | leaking host credentials to HTTP proxy | |
| CVE-2026-92387 | never-ending loop via server response omission | |
| CVE-2026-92388 | FTP wildcard write callback mixup | |
| CVE-2026-92386 | server-set cookie aborts cookie jar load | |
| CVE-2026-92389 | TFTP direction confusion | |
| CVE-2026-86409 | stale SigV4 headers sent unintended | |
| CVE-2026-87865 | knownhost callback mismatches key as missing | |
| CVE-2026-87864 | IMAP APPEND plus CRLF conversion command injection | |
| CVE-2026-87863 | HSTS response erases persisted entries | |
| CVE-2026-87866 | wolfSSL public-key pinning bypass | |
| CVE-2026-87861 | cross-origin reuse of a Negotiate connection | |
| CVE-2026-87862 | HSTS cache import drops longer-lived child | |
| CVE-2026-86411 | FTP connection reuse inherits client-certificate | |
| CVE-2026-86412 | server-set cookie erases cookie jar |
Showing top 20 of 23 CVEs. View all on vendor page → →