CVE-2026-124437
Scriban before 7.5.3 Denial of Service via Unguarded Builtins and Recursion
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 |
| 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