---
cve: "CVE-2026-74795"
severity: "HIGH"
cvss: 8.7
epss: "32%"
vendor: "scriban"
kev: false
exploited: false
published: "2026-08-16 14:16:57"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T06:08:03+02:00"
---

# CVE-2026-74795

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- b5ac4bf30459fdc76964e3f751e16f7e96079ea7 (Commit)

## Referenzen

- <https://github.com/scriban/scriban/security/advisories/GHSA-wgh7-7m3c-fx25>
- <https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-uncontrolled-recursion>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-74795) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_