CVE-2026-74787
Received Received - Intake

Scriban Template Engine Uncontrolled Recursion Vulnerability

Publication date: 2026-08-16

Last updated on: 2026-08-16

Assigner: VulnCheck

Description
Scriban before 7.0.0 contains an uncontrolled recursion vulnerability in the object.to_json builtin function that lacks depth limits and circular reference detection. Attackers can craft templates with self-referencing objects to trigger unbounded recursion, causing a StackOverflowException that fatally terminates the hosting .NET 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-2026-74787
EUVD
EUVD-2026-59953

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
scriban scriban to 7.0.0 (exc)

Helpful Resources

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-2026-74787 is an uncontrolled recursion vulnerability in Scriban versions before 7.0.0. The object.to_json function lacks depth limits and circular reference detection, allowing self-referencing objects to trigger infinite recursion. This causes a StackOverflowException that crashes the hosting .NET process.

Detection Guidance

To detect this vulnerability, inspect Scriban versions in use. Check for crashes in .NET processes hosting Scriban templates. Monitor for StackOverflowException errors in logs. Review templates using object.to_json for self-referencing or deeply nested objects.

Impact Analysis

This vulnerability can lead to denial of service by crashing applications using affected Scriban versions. Attackers can exploit it remotely without authentication, causing process termination and potential service disruption.

Compliance Impact

This vulnerability primarily causes denial of service by crashing .NET processes via StackOverflowException, which does not directly impact data confidentiality or integrity. However, process crashes could disrupt systems handling sensitive data, potentially violating availability requirements in GDPR (Article 32) or HIPAA (45 CFR § 164.308(a)(7)). No evidence suggests direct data exposure or compliance violations beyond service disruption.

Mitigation Strategies

Upgrade Scriban to version 7.0.0 or later. Implement input validation to prevent self-referencing objects in templates. Add depth limits and circular reference checks if custom code uses object.to_json. Monitor for crashes and apply patches promptly.

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