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CVE-2026-94265 is an authentication-information disclosure vulnerability in curl and libcurl's HTTP redirect handling. When following a redirect to a URL containing a userinfo component (username:password), curl can incorrectly retain the original host's HTTP Negotiate authentication state and transmit an Authorization: Negotiate header to a different origin. This exposes authentication information to a destination that should not receive it. The vulnerability affects releases before the fix in curl 8.23.0; the first affected version is not specified.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An authentication-state handling flaw in curl allows a malicious server to redirect a client to an untrusted third-party host using a URL containing arbitrary userinfo. curl can then send a newly generated Kerberos ticket using the client process's ambient identity, bypassing the domain-scoping restrictions normally enforced without --location-trusted. The advisory rates the vulnerability Medium, with CVSS v3.1 score 5.3 and confidentiality impact. Fixes are pending for Amazon Linux 2023 and Amazon Linux 2027 Preview; Amazon Linux 2 Core is listed as unaffected.
An HTTP Negotiate authentication flaw can send an Authorization header to a different origin that should not receive it.
Low-severity vulnerability in curl fixed in version 8.23.0. The article provides no technical details.
A vulnerability affecting the Curl package on FreeBSD, listed in the advisory's Nessus plugin. Its specific mechanism and impact are not described. Updating affected packages is the stated remediation.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.