Scriban before 7.0.0 (affected versions <= 6.6.0) contains an uncontrolled memory allocation vulnerability in the string.pad_left and string.pad_right template functions, which perform no validation on the width parameter before delegating to .NET's String.PadLeft/PadRight. When an application exposes Scriban to untrusted template input, an attacker can supply an arbitrarily large width value (e.g., 500,000,000) to trigger ~1GB memory allocations in a single call, resulting in OutOfMemoryException and denial of service. The TemplateContext.LimitToString limit does not prevent this because it is only enforced after the string has been fully allocated.
Metrics
Affected Vendors & Products
References
History
Mon, 17 Aug 2026 17:30:00 +0000
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ssvc
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Mon, 17 Aug 2026 11:30:00 +0000
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Scriban
Scriban scriban |
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Scriban
Scriban scriban |
Sun, 16 Aug 2026 13:30:00 +0000
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| Description | Scriban before 7.0.0 (affected versions <= 6.6.0) contains an uncontrolled memory allocation vulnerability in the string.pad_left and string.pad_right template functions, which perform no validation on the width parameter before delegating to .NET's String.PadLeft/PadRight. When an application exposes Scriban to untrusted template input, an attacker can supply an arbitrarily large width value (e.g., 500,000,000) to trigger ~1GB memory allocations in a single call, resulting in OutOfMemoryException and denial of service. The TemplateContext.LimitToString limit does not prevent this because it is only enforced after the string has been fully allocated. | |
| Title | Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-16T13:14:13.132Z
Updated: 2026-08-17T16:46:25.578Z
Reserved: 2026-08-16T12:56:02.577Z
Link: CVE-2026-74788
Updated: 2026-08-17T16:46:16.640Z
Status : Received
Published: 2026-08-16T14:16:56.787
Modified: 2026-08-17T17:16:52.490
Link: CVE-2026-74788
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