Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/scriban/scriban/security/advisories/GHSA-wgh7-7m3c-fx25
- https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-uncont
FAQ
What is CVE-2026-74795?
CVE-2026-74795 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 i...
How severe is CVE-2026-74795?
CVE-2026-74795 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-74795?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.