CVE-2021-40219
HIGHCVSS 8.8/10EPSS 3.32%
Last modified
CVE-2021-40219 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 3.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bolt | Bolt Cms | <= 4.2.0 |
References
- https://github.com/bolt/coreThird Party Advisory
- https://github.com/iiSiLvEr/CVEs/tree/main/CVE-2021-40219Exploit, Third Party Advisory
- https://github.com/bolt/coreThird Party Advisory
- https://github.com/iiSiLvEr/CVEs/tree/main/CVE-2021-40219Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-40219?
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.
How severe is CVE-2021-40219?
CVE-2021-40219 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 3.32% probability of exploitation in the next 30 days.
How do I fix CVE-2021-40219?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- 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.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-40219?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST