CVE-2025-1734

In PHP from 8.1. before 8.1.32, from 8.2. before 8.2.28, from 8.3. before 8.3.19, from 8.4. before 8.4.5, when receiving headers from HTTP server, the headers missing a colon : are treated as valid headers even though they are not. This may confuse applications into accepting invalid headers...