Scriban before 6.6.0 contains an uncontrolled recursion vulnerability in its recursive-descent parser. The parser does not enforce a default expression depth limit (the ExpressionDepthLimit property in ParserOptions defaults to null/disabled), so an attacker who controls template input can supply a deeply nested template (e.g., thousands of nested parentheses or blocks) that exhausts thread stack space and raises a StackOverflowException. Because a StackOverflowException cannot be caught in .NET, this causes immediate, unrecoverable termination of the hosting process, resulting in a denial of service. Applications that process untrusted or user-supplied templates can be exploited remotely without authentication.
Metrics
Affected Vendors & Products
References
History
Tue, 18 Aug 2026 02:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 11:30:00 +0000
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| First Time appeared |
Scriban
Scriban scriban |
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| Vendors & Products |
Scriban
Scriban scriban |
Sun, 16 Aug 2026 13:30:00 +0000
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| Description | Scriban before 6.6.0 contains an uncontrolled recursion vulnerability in its recursive-descent parser. The parser does not enforce a default expression depth limit (the ExpressionDepthLimit property in ParserOptions defaults to null/disabled), so an attacker who controls template input can supply a deeply nested template (e.g., thousands of nested parentheses or blocks) that exhausts thread stack space and raises a StackOverflowException. Because a StackOverflowException cannot be caught in .NET, this causes immediate, unrecoverable termination of the hosting process, resulting in a denial of service. Applications that process untrusted or user-supplied templates can be exploited remotely without authentication. | |
| Title | Scriban before 6.6.0 Denial of Service via Uncontrolled Recursion | |
| Weaknesses | CWE-674 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-16T13:14:17.698Z
Updated: 2026-08-17T16:04:35.166Z
Reserved: 2026-08-16T12:59:42.222Z
Link: CVE-2026-74795
Updated: 2026-08-17T15:44:47.673Z
Status : Received
Published: 2026-08-16T14:16:57.590
Modified: 2026-08-17T16:17:48.827
Link: CVE-2026-74795
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