Scriban: array.insert_at index parameter DoS bypasses LoopLimit and LimitToString — GHSA-24C8-4792-22HX

Summary

## Summary `ArrayFunctions.InsertAt` in Scriban allocates `index - list.Count` null entries in a tight C# `for` loop with no bound on `index`. The function is exposed to template authors as `array.insert_at`, and the fill loop ignores every existing safety control: `LoopLimit`, `LimitToString`, `ObjectRecursionLimit`, and `RecursiveLimit`. A single template such as `{{ [1] | array.insert_at 200000000 'x' |…

Product

nuget: scriban

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source

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