CVE-2026-124437
Published:November 08, 2026
Updated:November 09, 2026
Scriban before 7.5.3 contains a resource exhaustion vulnerability that allows untrusted template authors to exhaust memory and CPU because builtins like math.format, regex.replace and string.escape skip the LimitToString allocation guard. Attackers can submit small templates using huge format precision specifiers, shared-structure array comparison, BigInteger multiplication or exponential function recursion that ignore LoopLimit and CancellationToken, crashing or stalling multi-tenant hosts.
Affected Packages
Scriban.Signed (DOT_NET):
Affected version(s) >=7.0.0.0 <7.5.3 || >=4.0.0.0 <7.5.3 || >=2.1.0.0 <7.5.3 || >=6.0.0.0 <7.5.3 || >=5.0.0.0 <7.5.3 || >=3.0.0.0 <7.5.3Fix Suggestion:
Update to version 7.5.3Scriban (DOT_NET):
Affected version(s) >=7.0.0.0 <7.5.3 || >=2.0.0.0 <7.5.3 || >=4.0.0.0 <7.5.3 || >=0.1.0.0 <7.5.3 || >=6.0.0.0 <7.5.3 || >=5.0.0.0 <7.5.3 || >=1.0.0.0 <7.5.3 || >=3.0.0.0 <7.5.3Fix Suggestion:
Update to version 7.5.3https://github.com/scriban/scriban.git (GITHUB):
Affected version(s) >=v0.1.0 <7.5.3 || >=v1.0.0-beta-001 <7.5.3 || >=v1.0.0 <7.5.3 || >=v2.0.0-alpha-001 <7.5.3 || >=v2.0.0 <7.5.3 || >=2.1.0 <7.5.3 || >=3.0.0-alpha.1 <7.5.3 || >=3.0.0 <7.5.3 || >=4.0.0 <7.5.3 || >=5.0.0 <7.5.3 || >=6.0.0 <7.5.3 || >=7.0.0 <7.5.3Fix Suggestion:
Update to version 7.5.3scriban (NUGET):
Affected version(s) >=7.0.0 <7.5.3 || >=2.0.0-alpha-001 <7.5.3 || >=3.0.0-alpha.1 <7.5.3 || >=2.0.0 <7.5.3 || >=4.0.0 <7.5.3 || >=1.0.0-beta-001 <7.5.3 || >=0.1.0 <7.5.3 || >=6.0.0 <7.5.3 || >=5.0.0 <7.5.3 || >=1.0.0 <7.5.3 || >=3.0.0 <7.5.3Fix Suggestion:
Update to version 7.5.3scriban.signed (NUGET):
Affected version(s) >=7.0.0 <7.5.3 || >=2.0.0-alpha-001 <7.5.3 || >=3.0.0-alpha.1 <7.5.3 || >=2.0.0 <7.5.3 || >=4.0.0 <7.5.3 || >=1.0.0-beta-001 <7.5.3 || >=6.0.0 <7.5.3 || >=5.0.0 <7.5.3 || >=0.9.0 <7.5.3 || >=1.0.0 <7.5.3 || >=3.0.0 <7.5.3Fix Suggestion:
Update to version 7.5.3Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption