CVE-2026-124438 Scriban before 7.5.2 Delegate Target Exposure via array.map Member Access

Critical 9.1 Published 8 Nov 2026 Updated 12 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-124438?

CVE-2026-124438 is a critical vulnerability in scriban, published on 8 Nov 2026.

Official description

Scriban before 7.5.2 contains an information disclosure and object manipulation vulnerability that allows template authors to access .NET internals of function values through reflection member accessors. Attackers can use array.map to read Target, Method, or ReturnType on imported delegates, exposing and overwriting service properties, captured closure secrets, and assembly paths.

Weakness: CWE-200

Which versions are affected by CVE-2026-124438?

How do I fix CVE-2026-124438?

No fix has been published for CVE-2026-124438 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-124438 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124438 exists.

Sources

Also known as GHSA-fr78-j433-79gx, GHSA-hvr4-4p37-494f.