Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-94265— Authorization: Negotiate sent to foreign origin

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.

当处理指向包含用户信息（即 组件）的 URL 的 HTTP 重定向时，curl 可能会错误地保留并重新发送原始主机的 HTTP Negotiate 认证状态。因此，恶意服务器可触发一个包含任意用户信息的重定向，迫使 curl 向不受信任的第三方主机发送新生成的 Kerberos 票据——该票据使用客户端进程的当前环境身份生成。此举实质上绕过了通常因未启用 选项而实施的域范围限制。

AI Predicted 6.8 Difficulty: Easy EPSS 0.34% · P27

Affected Version Matrix 2

VendorProduct Version RangeStatus
curl curl 8.22.0≤ 8.22.0 affected
8.21.0≤ 8.21.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-94265

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Authorization: Negotiate sent to foreign origin
Source: CVE Program / CVE List V5
Vulnerability Description
When processing an HTTP redirect to a URL containing userinfo (a `username:password` component), curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl to send a freshly minted Kerberos ticket—generated using the ambient identity of the client process to an untrusted third-party host, effectively bypassing the domain-scoping restrictions normally enforced by the absence of `--location-trusted`.
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-2026-94265

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-94265

请登录查看更多情报信息。

Vendor Pages for CVE-2026-94265 (2)

Other References for CVE-2026-94265 (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-2026-86415 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
Same vendor: curl