mention --insecure-http-parser

Author: BethGriggs

doc/changelogs/CHANGELOG_V18.md

@@ -63,7 +63,8 @@ More detailed information on each of the vulnerabilities can be found in [July 7
 `llhttp` is updated to 6.0.7 which includes fixes for the following vulnerabilities.
 
 * **HTTP Request Smuggling - Flawed Parsing of Transfer-Encoding (Medium)([CVE-2022-32213](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32214) )**: The `llhttp` parser in the `http` module does not correctly parse and validate Transfer-Encoding headers. This can lead to HTTP Request Smuggling (HRS).
-* **HTTP Request Smuggling - Improper Delimiting of Header Fields (Medium)([CVE-2022-32214](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32214))**: The `llhttp` parser in the `http` module does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling. **Note**: This is can be considered a breaking change due to disabling LF header delimiting.
+* **HTTP Request Smuggling - Improper Delimiting of Header Fields (Medium)([CVE-2022-32214](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32214))**: The `llhttp` parser in the `http` module does not strictly use the CRLF sequence to delimit HTTP requests. This can lead to HTTP Request Smuggling. **Note**: This can be considered a breaking change due to disabling LF header delimiting. To enable LF header delimiting you can specify the `--insecure-http-parser` command-line flag, but note that this will additionally enable other insecure behaviours.
+Use an insecure HTTP parser that accepts invalid HTTP headers. This may allow interoperability with non-conformant HTTP implementations. It may also allow request smuggling and other HTTP attacks that rely on invalid headers being accepted. Avoid using this option.
 * **HTTP Request Smuggling - Incorrect Parsing of Multi-line Transfer-Encoding (Medium)([CVE-2022-32215](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32215))**: The `llhttp` parser in the `http` module does not correctly handle multi-line Transfer-Encoding headers. This can lead to HTTP Request Smuggling (HRS).
 
 Some of these fixes required breaking changes, so you may be impacted by this update.