What is CVE-2026-74783?

CVE-2026-74783 is a high-severity vulnerability in Scriban, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-16.

How severe is CVE-2026-74783?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Scriban

CVE-2026-74783

Scriban versions 6.6.0 through 7.2.0 contain a non-enforcing ExpressionDepthLimit guard that fails to stop recursive descent parsing of deeply nested expressions. Attackers can supply templates with deeply nested parentheses, array initializers, object initializers, or unary operators to trigger an uncatchable StackOverflowException that immediately terminates the host process.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Scriban — versions 0

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-74783?: CVE-2026-74783 is a high-severity vulnerability in Scriban, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-16.
How severe is CVE-2026-74783?: High severity. CVSS v3 base score is 7.5 out of 10.