Vulnerability · Published Aug 16, 2026 · Assigned by VulnCheck

CVE-2026-74787Scriban before 7.0.0 Uncontrolled Recursion via object.to_json

High 7.5

In plain English

A high-severity security flaw in scriban from scriban. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 57.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Scriban before 7.0.0 contains an uncontrolled recursion vulnerability in the object.to_json builtin function that lacks depth limits and circular reference detection. Attackers can craft templates with self-referencing objects to trigger unbounded recursion, causing a StackOverflowException that fatally terminates the hosting .NET process.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
NuGet	scriban	7.0.0	GHSA-xcx6-vp38-8hr5
NuGet	scriban.signed	7.0.0	GHSA-xcx6-vp38-8hr5

Affected products (as reported)

Vendor	Product	Versions
scriban	scriban	0 – before 7.0.0

Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-xcx6-vp38-8hr5) vendor-advisory
VulnCheck Advisory: Scriban before 7.0.0 Uncontrolled Recursion via object.to_json third-party-advisory