CVE-2026-74784: Scriban before 7.2.0 Denial of Service via array.insert_at

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% 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-770

Description

Scriban before 7.2.0 contains a denial of service vulnerability in the array.insert_at function that allocates unbounded null entries without respecting LoopLimit or LimitToString constraints. Attackers can supply a large index parameter to trigger OutOfMemoryException and crash the host process in under a second.

Affected products

scriban: before 7.2.0 — fixed in 7.2.0

How to fix

Upgrade to a fixed version: scriban 7.2.0. Check the vendor advisory for mitigations.

References

https://github.com/scriban/scriban/security/advisories/GHSA-24c8-4792-22hx
https://www.vulncheck.com/advisories/scriban-before-denial-of-service-via-array-insert-at

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