CVE-2026-124439

HIGH 7.5

Scriban before 7.5.3 Denial of Service via Uncatchable StackOverflowException

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Scriban and Scriban.Signed before 7.5.3 contain uncontrolled recursion flaws in which postfix member, indexer, and call chains bypass ExpressionDepthLimit, array comparison lacks depth and cycle checks, and object.eval bypasses RecursiveLimit. Attackers who can supply templates can trigger an uncatchable StackOverflowException that terminates the host process.

CWE	CWE-674
Vendor	scriban
Product	scriban
Published	Nov 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

scriban / scriban

0 < 7.5.3

scriban / scriban

0 < 7.5.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/scriban/scriban/security/advisories/GHSA-mvmw-9jxc-7pr2 vulncheck.com: https://www.vulncheck.com/advisories/scriban-before-7.5.3-denial-of-service-via-uncatchable-stackoverflowexception