CVE-2021-29440

Grav is a file based Web-platform. Twig processing of static pages can be enabled in the front matter by any administrative user allowed to create or edit pages. As the Twig processor runs unsandboxed, this behavior can be used to gain arbitrary code execution and elevate privileges on the instance. The issue was addressed in version 1.7.11.

• CWE-94

• http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.htmlExploit, Third Party Advisory, VDB Entry
• https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilitiesExploit, Third Party Advisory
• https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxcThird Party Advisory
• https://packagist.org/packages/getgrav/gravProduct, Third Party Advisory
• http://packetstormsecurity.com/files/162987/Grav-CMS-1.7.10-Server-Side-Template-Injection.htmlExploit, Third Party Advisory, VDB Entry
• https://blog.sonarsource.com/grav-cms-code-execution-vulnerabilitiesExploit, Third Party Advisory
• https://github.com/getgrav/grav/security/advisories/GHSA-g8r4-p96j-xfxcThird Party Advisory
• https://packagist.org/packages/getgrav/gravProduct, Third Party Advisory

Published

Apr 13, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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