GitHub Security Advisory (GHSA-2mx8-9ww7-p27x)Vendor advisory
https://github.com/craftcms/cms/security/advisories/GHSA-2mx8-9ww7-p27x CVE-2026-72784
MEDIUM
Craft CMS 5.0.0-RC1 before 5.10.6 SSRF via GraphQL asset mutation
Record summary
CVE-2026-72784 has a selected CVSS score of 6.9 (medium).
Description
Craft CMS versions >= 5.0.0-RC1 before 5.10.6 and >= 4.0.0-RC1 before 4.18.2 contain a server-side request forgery vulnerability in the GraphQL save<Volume>Asset mutation, which fetches an attacker-supplied URL server-side. The anti-SSRF validation is incomplete: validateIp() does not cover CGNAT (100.64.0.0/10) or NAT64 (64:ff9b::/96) ranges, and the only IP check runs after the request has already been issued. An attacker holding a GraphQL token scoped only to asset-creation permissions can disclose internal HTTP content from CGNAT/NAT64 targets, force outbound GET requests to internal hosts (including RFC1918, loopback, and metadata endpoints), and enumerate internal services.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 11, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Default status: unaffected | CVE List | 5.0.0-RC1 to < 5.10.6 | affected |
| 5.10.6 | unaffected | ||
| 4.0.0-RC1 to < 4.18.2 | affected | ||
| 4.18.2 | unaffected |
References
3nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-72784 VulnCheck Advisory: Craft CMS 5.0.0-RC1 before 5.10.6 SSRF via GraphQL asset mutationThird-party advisory
https://www.vulncheck.com/advisories/craft-cms-rc1-before-ssrf-via-graphql-asset-mutation