{"id":"CVE-2026-74795","summary":"Scriban before 6.6.0 Denial of Service via Uncontrolled Recursion","details":"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.","aliases":["GHSA-wgh7-7m3c-fx25"],"modified":"2026-08-19T03:31:23.438560385Z","published":"2026-08-16T13:14:17.698Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-674"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74795.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74795.json"},{"type":"ADVISORY","url":"https://github.com/scriban/scriban/security/advisories/GHSA-wgh7-7m3c-fx25"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74795"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-uncontrolled-recursion"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/scriban/scriban","events":[{"introduced":"0"},{"fixed":"b5ac4bf30459fdc76964e3f751e16f7e96079ea7"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"6.6.0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["6.5.8","6.5.7","6.5.6","6.5.5","6.5.4","6.5.3","6.5.2","6.5.1","6.5.0","6.4.0","6.3.0","6.2.1","6.2.0","6.1.0","6.0.0","5.12.1","5.12.0","5.11.0","5.10.0","5.9.1","5.9.0","5.8.0","5.7.0","5.6.0","5.5.2","5.5.1","5.5.0","5.4.6","5.4.5","5.4.4","5.4.3","5.4.2","5.4.1","5.4.0","5.3.0","5.2.0","5.1.0","5.0.0","4.1.0","4.0.2","4.0.1","4.0.0","3.9.0","3.8.2","3.8.1","3.8.0","3.7.0","3.4.1","3.6.0","3.5.0","3.4.2","3.4.0","3.3.3","3.3.2","3.3.1","3.3.0","3.2.2","3.2.1","3.2.0","3.1.0","3.0.7","3.0.6","3.0.5","3.0.4","3.0.3","3.0.2","3.0.1","3.0.0","2.1.4","2.1.3","2.1.2","2.1.1","2.1.0","v2.0.1","v2.0.0","v2.0.0-alpha-006","v2.0.0-alpha-005","v2.0.0-alpha-004","v2.0.0-alpha-003","v2.0.0-alpha-002","v2.0.0-alpha-001","v1.2.9","v1.2.8","v1.2.7","v1.2.6","v1.2.5","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.0","v1.0.0-beta-006","v1.0.0-beta-005","v1.0.0-beta-004","v1.0.0-beta-003","v1.0.0-beta-002","v1.0.0-beta-001","v0.16.0","v0.15.0","v0.14.0","v0.13.0","v0.12.1","v0.12.0","v0.11.0","v0.10.0","v0.9.1","v0.9.0","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74795.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}