libcurl 7.12.0 < 8.21.0 Cross-Proxy Digest Auth State Leak

The version of libcurl installed on the remote host is 7.12.0 prior to 8.21.0. It is, therefore, affected by a proxy credential disclosure vulnerability: - When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy...

USN-8227-1 curl vulnerabilities

It was discovered that curl incorrectly reused non-TLS connections when TLS was required in some STARTTLS configurations. A remote attacker could possibly use this issue to obtain sensitive information. CVE-2026-4873 It was discovered that curl incorrectly reused certain HTTP Negotiate connection...