Vulnerability in Scriban
CVE-2026-74790
Scriban before 7.0.0 caches TypedObjectAccessor by Type only without considering MemberFilter changes, allowing reused TemplateContext instances to expose members that should be hidden. Attackers can access filtered properties and fields by reusing a TemplateContext after tightening its MemberFilter, bypassing sandbox policies across requests or tenants.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% 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-5wr9-m6jw-xx44 (vendor-advisory)
- www.vulncheck.com/advisories/scriban-before-memberfilter-bypass-via-templatecon… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-74790?
- CVE-2026-74790 is a critical-severity vulnerability in Scriban, classified under Protection Mechanism Failure. CVSS score: 9.1/10. Published 2026-08-16.
- How severe is CVE-2026-74790?
- Critical severity. CVSS v3 base score is 9.1 out of 10.