Vulnerability in Scriban
CVE-2026-74787
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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (39.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Scriban — versions 0, 7.0.0
Weakness classification (CWE)
References
- github.com/scriban/scriban/security/advisories/GHSA-xcx6-vp38-8hr5 (vendor-advisory)
- www.vulncheck.com/advisories/scriban-before-uncontrolled-recursion-via-object-t… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-74787?
- CVE-2026-74787 is a high-severity vulnerability in Scriban, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-08-16.
- How severe is CVE-2026-74787?
- High severity. CVSS v3 base score is 7.5 out of 10.