CVE-2025-6494 sparklemotion nokogiri hashmap.c hashmap_get_with_hash heap-based overflow

A vulnerability was found in sparklemotion nokogiri c29c920907366cb74af13b4dc2230e9c9e23b833. It has been classified as problematic. This affects the function hashmapgetwithhash of the file gumbo-parser/src/hashmap.c. The manipulation leads to heap-based buffer overflow. An attack has to be...