includes/core/is_user.php in NukeViet before 4.3.04 deserializes the untrusted nvloginhash cookie (i.e., the code relies on PHP's serialization format when JSON can be used to eliminate the risk).
References:- https://nvd.nist.gov/vuln/detail/CVE-2019-7725
- https://github.com/nukeviet/nukeviet/pull/2740/commits/05dfb9b4531f12944fe39556f58449b9a56241be
- https://github.com/nukeviet/nukeviet/blob/4.3.04/CHANGELOG.txt
- https://github.com/nukeviet/nukeviet/blob/nukeviet4.3/CHANGELOG.txt
- https://github.com/nukeviet/nukeviet/compare/4.3.03...4.3.04
- https://github.com/advisories/GHSA-32wr-8wxm-852c