title: Apache HTTP Server: mod_proxy prior to 2.4.55 allows a backend to trigger HTTP response splitting
description: Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.
problem types: CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers
affected:
{
defaultStatus: unaffected
product: Apache HTTP Server
vendor: Apache Software Foundation
versions:
lessThan: 2.4.55, status: affected, version: 0, versionType: semver
}
metrics:
other: [
content: {'text': 'moderate'}
type: Textual description of severity
]