What’s Vulnerable › Vulnerabilities

CVE-2026-74790: Scriban before 7.0.0 MemberFilter Bypass via TemplateContext Cache

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-16 · updated 2026-08-31
• Weakness: CWE-693

Description

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.

Affected products

• scriban: before 7.0.0 — fixed in 7.0.0

How to fix

Upgrade to a fixed version: scriban 7.0.0. Check the vendor advisory for mitigations.

References

• https://github.com/scriban/scriban/security/advisories/GHSA-5wr9-m6jw-xx44
• https://www.vulncheck.com/advisories/scriban-before-memberfilter-bypass-via-templatecontext-cache
• https://github.com/scriban/scriban/security/advisories/GHSA-5wr9-m6jw-xx44

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