CVE-2026-74786

Medium

Description

Scriban before 7.0.0 (affected versions <= 6.6.0) contains a denial-of-service vulnerability in which the LimitToString safety limit (default 1MB) can be bypassed because ObjectToString resets the per-call length counter (_currentToStringLength) on every top-level call and StringBuilderOutput enforces no cumulative output-size limit. An attacker who can supply a template can render a near-limit string repeatedly in a loop, allocating approximately 1GB of memory and causing an out-of-memory condition that crashes the host application.

SeverityMedium

CVSS6.5

Exploit probability—

ProductScriban

PublishedAug 16, 2026

First seenAug 16, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

Scriban7.0.0 or later
Scriban.Signed7.0.0 or later

Vendor advisories

github.com/scriban/scriban/security/advisories/GHSA-m2p3-hwv5-xpqw

Affected products

Product	Affected versions	Fixed in
ScribanNuGet	v < 7.0.0	7.0.0
Scriban.SignedNuGet	v < 7.0.0	7.0.0

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