Vulnerability · Published Sep 2, 2026 · Assigned by Hackrate

CVE-2026-79991Authenticated SQL Injection via nested eager-loading criteria

High 7.1

In plain English

A high-severity SQL injection in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.5%top 56.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments(), which is the function that enforces site-scope filtering via array_intersect against the GraphQL schema’s allowed sites. The query path (ElementResolverprepareElementQuery) correctly calls prepareArguments()`, so queries to unauthorized sites return empty. But mutations bypass this entirely — an attacker with a token scoped to Site A can create, modify, or delete entries in Site B by passing siteId in the mutations argument.

Affected products (as reported)

Vendor	Product	Versions
craftcms	cms	5.0.0-RC1 – before 5.10.13

Weakness: CWE-89 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N

References

https://www.hckrt.com/hacktivity/HCKRT-B5BSMM third-party-advisory, technical-description, mitigation
https://github.com/craftcms/cms/releases/tag/5.10.13 release-notes
https://github.com/craftcms/cms product
https://github.com/craftcms/cms/security/advisories/GHSA-4mgp-5vf2-7c9m third-party-advisory