Craft CMS 5.0.0-RC1 before 5.10.6 Environment Variable Leak
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.
CVE-2026-72782
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-72782
cms
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
cms
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "craftcms",
"product": "cms",
"versions": [
{
"status": "affected",
"version": "5.0.0-RC1",
"lessThan": "5.10.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.6",
"versionType": "semver"
}
],
"packageURL": "pkg:composer/craftcms/cms",
"defaultStatus": "unaffected"
},
{
"vendor": "craftcms",
"product": "cms",
"versions": [
{
"status": "affected",
"version": "4.0.0-RC1",
"lessThan": "4.18.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.18.2",
"versionType": "semver"
}
],
"packageURL": "pkg:composer/craftcms/cms",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-72782
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #12829 · Revision 1
- Added to Heist Feed
- Publisher date