CVE-2026-74789

Scriban before 7.0.0 (affected <= 6.6.0) applies its LoopLimit constraint only to script loop statements and not to expensive iteration performed inside built-in operators and functions. As a result, a single expression such as {{ 1..1000000 | array.size }} — or a memory-amplification expression such as {{ 'A' * 200000000 }} — can force large CPU or memory consumption even when LoopLimit is configured to a very small value, resulting in denial of service. Applications that render attacker-controlled templates and rely on LoopLimit for safe execution are affected.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/scriban/scriban/security/advisories/GHSA-c875-h985-hvrc
https://www.vulncheck.com/advisories/scriban-before-looplimit-bypass-via-built-in-operations

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-16 14:16

Updated : 2026-08-31 20:30

NVD link : CVE-2026-74789

Mitre link : CVE-2026-74789

CVE.ORG link : CVE-2026-74789

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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