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CVE-2026-74788— Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right

CVSS 7.5 · High

Affected Version Matrix 2

VendorProductVersion RangeStatus
scribanscriban< 7.0.0affected
7.0.0unaffected
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I. Basic Information for CVE-2026-74788

Vulnerability Information
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Vulnerability Title
Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
scribanscriban 0 ~ 7.0.0 -

II. Public POCs for CVE-2026-74788

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7700 chars
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III. Intelligence Information for CVE-2026-74788

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Vendor Advisories for CVE-2026-74788 (2)

Same Patch Batch · scriban · 2026-08-16 · 15 CVEs total

CVE-2026-730619.8 CRITICALScriban before 7.2.2 Arbitrary Property Write via TypedObjectAccessor
CVE-2026-747909.1 CRITICALScriban before 7.0.0 MemberFilter Bypass via TemplateContext Cache
CVE-2026-747848.7 HIGHScriban before 7.2.0 Denial of Service via array.insert_at
CVE-2026-747918.6 HIGHScriban before 7.0.0 Authorization Bypass via Stale Include Cache
CVE-2026-747927.5 HIGHScriban before 7.0.0 Stack Overflow via nested array initializers
CVE-2026-747837.5 HIGHScriban 6.6.0 through 7.2.0 Parser Recursion Denial of Service
CVE-2026-747957.5 HIGHScriban before 6.6.0 Denial of Service via Uncontrolled Recursion
CVE-2026-747877.5 HIGHScriban before 7.0.0 Uncontrolled Recursion via object.to_json
CVE-2026-747947.5 HIGHScriban before 6.6.0 Denial of Service via Infinite Recursion
CVE-2026-747897.5 HIGHScriban before 7.0.0 LoopLimit Bypass via Built-in Operations
CVE-2026-730627.5 HIGHScriban 3.0.0 through 7.2.0 Denial of Service via Array Multiplication
CVE-2026-730607.5 HIGHScriban 3.0.0 through 7.2.5 Denial of Service via ScriptRange.Multiply
CVE-2026-747856.5 MEDIUMScriban before 7.0.0 Denial of Service via Unbounded Resource Consumption
CVE-2026-747866.5 MEDIUMScriban before 7.0.0 Denial of Service via Unbounded Template Output

IV. Related Vulnerabilities

Same product: scriban
Same vendor: scriban
Same weakness: CWE-770

V. Comments for CVE-2026-74788

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