CVE-2026-124439

HIGH
MEDIUM Priority: 0.04 BB Relevance: 77/100
Published: 2026-11-08 Modified: 2026-11-12 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: None
VI: None
VA: High

Description

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.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
scriban scriban 0 < 7.5.3
scriban scriban 0 < 7.5.3
scriban scriban 0 < 7.5.3
scriban scriban 0 < 7.5.3

Bug Bounty Relevance

77 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.7 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.45%
Raw Score 0.004540
Percentile 39.9%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00454
2026-11-12
0.00454
2026-11-10
0.00454
2026-11-09
0.00454

Intelligence Sources

mitre ref →
nvd ref →