Description
Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, the saveAsset GraphQL mutation uses filter_var(..., FILTER_VALIDATE_IP) to block a specific list of IP addresses. However, alternative IP notations (hexadecimal, mixed) are not recognized by this function, allowing attackers to bypass the blocklist and access cloud metadata services. This issue is patched in versions 4.16.18 and 5.8.22.
Problem types
CWE-918: Server-Side Request Forgery (SSRF)
Product status
References
github.com/...ms/cms/security/advisories/GHSA-m5r2-8p9x-hp5m
github.com/...ommit/d49e93e5ba0c48939ce5eaa6cd9b4a990542d8b2
github.com/craftcms/cms/releases/tag/5.8.22