A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SENDHEADERS message would be sent for the response which in turn meant that at least one AJP proxy (modproxy_ajp) would use the response headers from the previous request leading to an information leak.
{ "severity": "HIGH", "github_reviewed_at": "2023-06-21T22:06:39Z", "cwe_ids": [ "CWE-732" ], "github_reviewed": true, "nvd_published_at": "2023-06-21T11:15:09Z" }