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.

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.

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.

Affected products

Scriban — versions 0, 7.0.0

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

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