curl: curl: Authentication bypass due to incorrect connection reuse with Negotiate authentication

A flaw was found in curl. When an application uses libcurl to make multiple Negotiate-authenticated HTTP or HTTPS requests to the same server with different credentials, libcurl may incorrectly reuse an existing connection. This logical error can cause a subsequent request to be sent using the...

curl: curl: Authentication bypass due to incorrect connection reuse with Negotiate authentication

A flaw was found in curl. When an application uses libcurl to make multiple Negotiate-authenticated HTTP or HTTPS requests to the same server with different credentials, libcurl may incorrectly reuse an existing connection. This logical error can cause a subsequent request to be sent using the...

USN-8099-1 curl vulnerabilities

Zhicheng Chen discovered that curl could incorrectly reuse the wrong connection for Negotiate-authenticated HTTP or HTTPS requests. This could result in the use of credentials from a different connection, contrary to expectations. This issue only affected Ubuntu 20.04 LTS. CVE-2026-1965 It was...

Windows: Constrained Impersonation Capability EoP(CVE-2018-0821)

Windows: Constrained Impersonation Capability EoP Platform: Windows 10 1703/1709 not tested earlier versions Class: Elevation of Privilege Summary: It’s possible to use the constrained impersonation capability added in Windows 10 to impersonate a lowbox SYSTEM token leading to EoP. Description:...