What’s Vulnerable › Vulnerabilities

CVE-2021-40219

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-11 · updated 2026-07-09
• Weakness: CWE-94

Description

Bolt CMS <= 4.2 is vulnerable to Remote Code Execution. Unsafe theme rendering allows an authenticated attacker to edit theme to inject server-side template injection that leads to remote code execution.

Affected products

• Bolt Cms: through 4.2.0

References

• https://github.com/bolt/core
• https://github.com/bolt/core/blob/3b21a73ebf519b76756d3ad2841312d10ef11461/src/Controller/Frontend/TemplateController.php
• https://github.com/iiSiLvEr/CVEs/tree/main/CVE-2021-40219
• https://github.com/bolt/core
• https://github.com/bolt/core/blob/3b21a73ebf519b76756d3ad2841312d10ef11461/src/Controller/Frontend/TemplateController.php
• https://github.com/iiSiLvEr/CVEs/tree/main/CVE-2021-40219

Get alerted when CVE-2021-40219 or the next vulnerability affects your stack