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CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

Weakness Summary

The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.

  • Canonical source: MITRE CWE-1336 (opens in a new tab)
  • Published Atomicorp CVE observations: 13
  • Distinct affected products in those observations: 12
  • Active Atomicorp rules associated with this weakness: 21

Atomicorp Research Context

Atomicorp has published CVE-specific research observations associated with this weakness category. Each linked CVE page states whether the tested request was detected or blocked and is the authoritative customer-facing finding.

The CVEs and rules shown here are selected published examples, not a complete list of Atomicorp protections. If a CWE, CVE, or rule is absent from this page, no conclusion should be drawn about whether Atomicorp protects against that weakness or attack method.

A CWE describes a class of software weakness. It does not identify one exploit request, and association with a CWE does not mean that every vulnerability or exploitation path in that category is detected or blocked.

Selected Published CVE Observations

CVEVulnerabilityProductAtomicorp findingObserved rules
CVE-2024-4040CrushFTP VFS - Sandbox Escape LFRcrushftpAttack Blocked by Atomicorp392301
CVE-2025-53833LaRecipe < 2.8.1 Remote Code Execution via SSTIlarecipeAttack Blocked by Atomicorp340087
CVE-2026-44181Jupyter Enterprise Gateway: Jinja2 Template Server Side Template Injection results in Remote Code Executionenterprise gatewayAttack Blocked by Atomicorp340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
CVE-2025-23211Tandoor Recipes < 1.5.24 - Jinja2 SSTI RCErecipesAttack Blocked by Atomicorp330791 , 340152
CVE-2024-23692Rejetto HTTP File Server - Template injectionhttp file serverAttack Blocked by Atomicorp344364 , 344366 , 390703 , 390722
CVE-2026-55559Yamcs: Remote Code Execution via instance-template argument YAML injection (createInstance)yamcsAttack Blocked by Atomicorp344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
CVE-2026-28496FOSSBilling - Server-Side Template InjectionFOSSBillingAttack Blocked by Atomicorp340130 , 340155 , 341155
CVE-2026-28797RAGFlow: Server-Side Template Injection (SSTI) leading to Remote Code Execution (RCE) in Agent "Text Processing" ComponeragflowAttack Blocked by Atomicorp340014 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
CVE-2026-72827Grav CMS before 2.0.13 Remote Code Execution via TwiggravAttack Blocked by Atomicorp340014 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
CVE-2026-75574Grav before 4.2.2 Remote Code Execution via Email TwiggravAttack Blocked by Atomicorp340014 , 344361 , 344363 , 344364 , 344366 , 344370
CVE-2026-22244OpenMetadata Server-Side Template Injection (SSTI) in FreeMarker email templates that leads to RCEopenmetadataAttack Blocked by Atomicorp340014 , 340023 , 340029 , 340193 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 347009 , 393655
CVE-2026-77939Flextype CMS 1.0.0-dev RCE via POST /api/v1/query EndpointflextypeAttack Blocked by Atomicorp340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655
CVE-2026-78140Dromara UJCMS web-file-template Endpoint WebFileTemplateController.java update special elements in template engineUJCMSAttack Blocked by Atomicorp340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370

Associated Atomicorp WAF Rules

RuleStatusBehavior
330791Activedisruptive (deny)
340014Activedisruptive (deny)
340023Activedisruptive (deny)
340029Activedisruptive (deny)
340087Activedisruptive (deny)
340130Activedisruptive (deny)
340152Activedisruptive (deny)
340155Activedisruptive (deny)
340193Activedisruptive (deny)
341155Activedisruptive (deny)
344360Activedisruptive (deny)
344361Activedisruptive (deny)
344363Activedisruptive (deny)
344364Activedisruptive (deny)
344366Activedisruptive (deny)
344370Activedisruptive (deny)
347009Activedisruptive (deny)
390703Activedisruptive (deny)
390722Activedisruptive (deny)
392301Activedisruptive (deny)
393655Activedisruptive (deny)