CVE-2026-74783: Scriban versions 6.6.0 through 7.2.0 contain a non-enforcing ExpressionDepthLimit guard that fails to stop recursive…

CVE-2026-74783 · Severity: high · CVSS 7.5 · Published 2026-08-16

Scriban versions 6.6.0 through 7.2.0 contain a non-enforcing ExpressionDepthLimit guard that fails to stop recursive descent parsing of deeply nested expressions. Attackers can supply templates with deeply nested parentheses, array initializers, object initializers, or unary operators to trigger an uncatchable StackOverflowException that immediately terminates the host process.

Technologies: scriban (NuGet), Scriban.Signed (NuGet). Vendors: NuGet.

Quick answers

Is CVE-2026-74783 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-74783 being exploited in the wild.
How severe is CVE-2026-74783?
High severity, with a CVSS score of 7.5, published 16 August 2026.
Which products and versions are affected?
scriban (NuGet) ECOSYSTEM:introduced=6.6.0,fixed=7.2.1; Scriban.Signed (NuGet) ECOSYSTEM:introduced=6.6.0,fixed=7.2.1.
Is there a fix for CVE-2026-74783?
Yes. scriban (NuGet): upgrade to 7.2.1 or later; Scriban.Signed (NuGet): upgrade to 7.2.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-74783?
Check whether you run scriban (NuGet) or Scriban.Signed (NuGet) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • scriban (NuGet): upgrade to 7.2.1 or later
    dotnet add package scriban --version 7.2.1
  • Scriban.Signed (NuGet): upgrade to 7.2.1 or later
    dotnet add package Scriban.Signed --version 7.2.1

Affected products

  • scriban (NuGet) ECOSYSTEM:introduced=6.6.0,fixed=7.2.1
  • Scriban.Signed (NuGet) ECOSYSTEM:introduced=6.6.0,fixed=7.2.1

Identifiers

  • CVE-2026-74783
  • GHSA-6q7j-xr26-3h2c

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.