Remote code execution via template blacklist bypass
Published Feb 2, 2024 · Updated Dec 17, 2025
Server-side template injection in Beetl before 3.15.12 allows remote attackers to execute arbitrary code through crafted templates. DefaultNativeSecurityManager applies incomplete blacklist filtering to attacker-controlled template expressions, allowing prohibited operations to pass its checks. Exploitation requires an application to render an attacker-controlled template; resulting code runs with the hosting application's privileges.
Summary
What happened
Server-side template injection in Beetl before 3.15.12 allows remote attackers to execute arbitrary code through crafted templates. DefaultNativeSecurityManager applies incomplete blacklist filtering to attacker-controlled template expressions, allowing prohibited operations to pass its checks. Exploitation requires an application to render an attacker-controlled template; resulting code runs with the hosting application's privileges.
The record
- CVE
- CVE-2024-22533
- Published
- Feb 2, 2024
- Updated
- Dec 17, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-94, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 2, 2024CVE publishedPublication date reported by the CVE source.
- Dec 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Beetl template blacklist bypass proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo