CVE-2021-40219

8.8 highEPSS 3.4%

High (8.8) in bolt bolt cms. EPSS 3.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 3.4% chance of exploitation in the next 30 days; higher than 88% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2022-04-11
Modified: 2026-07-09
Record from: the NVD, synced 2026-10-19

Affected

bolt:bolt_cms

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

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