MGASA-2025-0184

Proxy-Authorization and Proxy-Authenticate headers persisted on cross-origin redirects potentially leaking sensitive information. CVE-2025-4673. os: inconsistent handling of OCREATE|OEXCL on Unix and Windows os.OpenFile(path, os.OCREATE|OEXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with OCREATE and OEXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location - CVE-2025-0913. crypto/x509: usage of ExtKeyUsageAny disables policy validation. Calling Verify with a VerifyOptions.KeyUsages that contains ExtKeyUsageAny unintentionally disabledpolicy validation. This only affected certificate chains which contain policy graphs, which are rather uncommon - CVE-2025-22874. OpenFile now always returns an error when the OCREATE and OEXCL flags are both set and the target path is a symlink.