CVE-2026-72782
Description
Craft CMS versions >= 5.0.0-RC1 before 5.10.6 and >= 4.0.0-RC1 before 4.18.2 interpolate environment variables and secrets (via ${ENV_VAR} strings in the elementId parameter) into Twig templates before rendering, even when the Twig sandbox is enabled. An authenticated attacker with control panel access can render a malicious sandboxed Twig template and, using a blind error-based technique across many requests, incrementally leak arbitrary environment variables and secrets. These can be abused to forge sessions (via CRAFT_SECURITY_KEY), escalate privileges, and steal database, SMTP, API, or blob storage credentials. Fixed in 5.10.6 and 4.18.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
craftcms/cmsPackagist | >= 5.0.0-RC1, < 5.10.6 | 5.10.6 |
craftcms/cmsPackagist | >= 4.0.0-RC1, < 4.18.2 | 4.18.2 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-596p-6jv8-775vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-72782ghsaADVISORY
- github.com/craftcms/cms/releases/tag/4.18.2ghsaWEB
- github.com/craftcms/cms/releases/tag/5.10.6ghsaWEB
- github.com/craftcms/cms/security/advisories/GHSA-596p-6jv8-775vnvdWEB
- www.vulncheck.com/advisories/craft-cms-rc1-before-environment-variable-leaknvdWEB
News mentions
0No linked articles in our index yet.