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.
CVE-2026-74795
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-16. a secondary CVSS source baseline 7.5; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(high)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 25%
- KEV
- Not listed
Published
August 16, 2026
Last Modified
August 17, 2026
Advisory Details (2)
Auto-updated Aug 16, 2026Scriban before 6.6.0 Denial of Service via Uncontrolled Recursion | Advisories | VulnCheck
https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-uncontrolled-recursionUncontrolled Recursion in Parser Leads to Stack Overflow and Process Crash (Denial of Service) · Advisory · scriban/scriban · GitHub
https://github.com/scriban/scriban/security/advisories/GHSA-wgh7-7m3c-fx25Vendor Advisories for CVE-2026-74795(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
NuGet(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| scriban | 0.1.0 ... 6.5.8 (122 versions) | 6.6.0 | — |
| Scriban.Signed | 0.10.0 ... 6.5.8 (110 versions) | 6.6.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 19× in last 7d / 19× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-20 07:34 UTCGHSA enrichment
- 2026-08-19 19:00 UTCEG score recompute
- 2026-08-19 19:00 UTCGHSA enrichment
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-19 06:23 UTCGHSA enrichment
- 2026-08-18 17:49 UTCEG score recompute
- 2026-08-18 17:49 UTCGHSA enrichment
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 13:49 UTCEPSS rescore
- 2026-08-18 04:58 UTCGHSA enrichment
- 2026-08-17 16:24 UTCGHSA enrichment
- 2026-08-17 15:44 UTCEG score recompute
- 2026-08-17 15:44 UTCGHSA enrichment
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 03:10 UTCEG score recompute
- 2026-08-17 03:10 UTCGHSA enrichment
- 2026-08-16 14:36 UTCEG score recompute
- 2026-08-16 13:27 UTCEG score recompute
- 2026-08-16 13:26 UTCMITRE cvelistV5first tracked
Frequently asked(5)
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Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-74795
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