CVE-2026-74794
Received Received - Intake

Scriban Template Engine Infinite Recursion Vulnerability

Publication date: 2026-08-16

Last updated on: 2026-08-16

Assigner: VulnCheck

Description
Scriban before 6.6.0 contains an infinite recursion vulnerability in object rendering when the ObjectRecursionLimit property defaults to unlimited. Attackers can supply circular reference objects to the template context, exhausting stack space and triggering an uncatchable StackOverflowException that terminates the hosting process.

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Meta Information

Published
2026-08-16
Last Modified
2026-08-16
Generated
2026-08-16
AI Q&A
2026-08-16
EPSS Evaluated
N/A
NVD
CVE-2026-74794
EUVD
EUVD-2026-59959

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
scriban scriban to 6.6.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

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Executive Summary

CVE-2026-74794 is an infinite recursion vulnerability in Scriban versions before 6.6.0. The default ObjectRecursionLimit property is set to unlimited, allowing attackers to provide objects with circular references. This causes the application to recurse indefinitely, exhausting stack space and triggering a StackOverflowException that crashes the hosting process.

Detection Guidance

To detect this vulnerability, monitor for applications using Scriban versions before 6.6.0. Check for stack overflow errors or process crashes in logs when processing templates with circular references. Inspect template contexts for unlimited ObjectRecursionLimit settings.

Impact Analysis

This vulnerability can lead to Denial of Service (DoS) attacks. Attackers can crash the entire application or service by supplying malicious input with circular references, causing downtime and disrupting normal operations. It is particularly dangerous in web applications using user-controlled payloads or ORM objects with circular references.

Compliance Impact

This vulnerability primarily causes Denial of Service (DoS) by crashing processes through infinite recursion. It does not directly affect data confidentiality or integrity, which are key focus areas for GDPR and HIPAA. However, prolonged DoS could impact system availability, potentially violating service level agreements or operational requirements in regulated environments.

Mitigation Strategies

Immediately update Scriban to version 6.6.0 or later. If updating is not possible, modify TemplateContext.cs to set a safe ObjectRecursionLimit (e.g., 20) to prevent infinite recursion. Review templates for circular references and restrict user-controlled input in template contexts.

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