CVE-2026-107929— local interface connection reuse mixup
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 （或命令行工具的 选项）被设置为文档中指定的前缀之一（ 、 、 ）时，该绑定不会成为连接复用的密钥。因此，后续请求不同源地址的传输可能会静默地复用已存在的连接，并从先前传输所使用的源地址发出请求。
Possible ATT&CK Techniques 3 AI
T1015 T1071 · Application Layer Protocol T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-107929
Vulnerability Information
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Vulnerability Title
local interface connection reuse mixup
Source: CVE Program / CVE List V5
Vulnerability Description
When `CURLOPT_INTERFACE` (or the command line tool's `--interface` option) is
set with one of the documented prefixes (`if!`, `host!`, `ifhost!`), that
binding is not part of the connection reuse key, so a later transfer asking
for a different source can silently reuse an existing connection and go out
from the earlier transfer's source address
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-2026-107929
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-107929 (2)
Other References for CVE-2026-107929 (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-2026-94266 | 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-2026-92390 | -J no-clobber guarantee bypassed with 103 early hints | |
| 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 → →
IV. Related Vulnerabilities
Same product: curl
-
CVE-2026-107928
info leak uploading over WebSockets with GnuTLS -
CVE-2026-94266
password leak in CURLINFO_EFFECTIVE_URL -
CVE-2026-94265
Authorization: Negotiate sent to foreign origin -
CVE-2026-92391
curl_mime_free stack overflow by recursion -
CVE-2026-92390
-J no-clobber guarantee bypassed with 103 early hints
Same vendor: curl
-
CVE-2026-107928
info leak uploading over WebSockets with GnuTLS -
CVE-2026-94266
password leak in CURLINFO_EFFECTIVE_URL -
CVE-2026-94265
Authorization: Negotiate sent to foreign origin -
CVE-2026-92391
curl_mime_free stack overflow by recursion -
CVE-2026-92390
-J no-clobber guarantee bypassed with 103 early hints