Craft is a content management system (CMS). In versions 4.5.0-RC1 through 4.16.18 and 5.0.0-RC1 through 5.8.22, the SSRF validation in Craft CMS’s GraphQL Asset mutation performs DNS resolution separately from the HTTP request. This Time-of-Check-Time-of-Use (TOCTOU) vulnerability enables DNS rebinding attacks, where an attacker’s DNS server returns different IP addresses for validation compared to the actual request. This is a bypass of the security fix for CVE-2025-68437 that allows access to all blocked IPs, not just IPv6 endpoints. Exploitation requires GraphQL schema permissions for editing assets in the <VolumeName> volume and creating assets in the <VolumeName> volume. These permissions may be granted to authenticated users with appropriate GraphQL schema access and/or Public Schema (if misconfigured with write permissions). Versions 4.16.19 and 5.8.23 patch the issue.
Weakness
The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Craft_cms | Craftcms | 3.5.1 (including) | 4.16.19 (excluding) |
| Craft_cms | Craftcms | 5.0.1 (including) | 5.8.23 (excluding) |
| Craft_cms | Craftcms | 3.5.0 (including) | 3.5.0 (including) |
| Craft_cms | Craftcms | 5.0.0 (including) | 5.0.0 (including) |
| Craft_cms | Craftcms | 5.0.0-rc1 (including) | 5.0.0-rc1 (including) |