The Apache project released an advisory, describing the following vulnerabilities:
A carefully crafted request body can cause a buffer overflow in the mod_lua
multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not
aware of an exploit for the vulnerabilty though it might be possible to craft one. This
issue affects Apache HTTP Server 2.4.51 and earlier.
A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash
(NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations,
can allow for requests to be directed to a declared Unix Domain Socket endpoint
(Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included).
The following products are NOT impacted: