CVE-2026-72827: Improper Neutralization of Special Elements Used in a Template Engine in getgrav grav
Grav CMS before 2.0.13 contains a server-side template injection vulnerability in email-action parameters that allows low-privileged page editors to execute arbitrary operating-system commands. Attackers can inject Twig payloads using the unsandboxed find filter in email subject, body, to, or from fields to achieve remote code execution when forms are submitted.
AI Analysis
Technical Summary
CVE-2026-72827 is a server-side template injection vulnerability affecting Grav CMS before version 2.0.13. The issue arises from improper neutralization of special elements in the template engine, specifically in email-action parameters. Low-privileged users can exploit this by injecting malicious Twig payloads using the unsandboxed find filter in email-related fields, enabling arbitrary command execution on the server when forms are processed.
Potential Impact
Successful exploitation allows an attacker with low privileges to execute arbitrary operating system commands remotely, potentially leading to full system compromise. This elevates the risk significantly as it bypasses typical privilege boundaries within the CMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict page editor permissions and avoid using untrusted input in email-action parameters. Monitor vendor channels for updates regarding patches or official mitigations.
CVE-2026-72827: Improper Neutralization of Special Elements Used in a Template Engine in getgrav grav
Description
Grav CMS before 2.0.13 contains a server-side template injection vulnerability in email-action parameters that allows low-privileged page editors to execute arbitrary operating-system commands. Attackers can inject Twig payloads using the unsandboxed find filter in email subject, body, to, or from fields to achieve remote code execution when forms are submitted.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-72827 is a server-side template injection vulnerability affecting Grav CMS before version 2.0.13. The issue arises from improper neutralization of special elements in the template engine, specifically in email-action parameters. Low-privileged users can exploit this by injecting malicious Twig payloads using the unsandboxed find filter in email-related fields, enabling arbitrary command execution on the server when forms are processed.
Potential Impact
Successful exploitation allows an attacker with low privileges to execute arbitrary operating system commands remotely, potentially leading to full system compromise. This elevates the risk significantly as it bypasses typical privilege boundaries within the CMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict page editor permissions and avoid using untrusted input in email-action parameters. Monitor vendor channels for updates regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-10T15:12:59.509Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7f0284bf8831d539fec860
Added to database: 08/14/2026, 11:56:52 UTC
Last enriched: 08/14/2026, 12:11:46 UTC
Last updated: 08/14/2026, 20:05:01 UTC
Views: 6
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