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CVE-2026-74783— Scriban 6.6.0 through 7.2.0 Parser Recursion Denial of Service

Quick assessment

Affected
scriban scriban
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

scriban是scriban组织的一款高性能的文本模板引擎。 scriban 6.6.0版本至7.2.0版本存在资源管理错误漏洞，该漏洞源于ExpressionDepthLimit防护未强制执行，无法阻止深度嵌套表达式的递归下降解析，攻击者可通过提供深度嵌套的括号、数组初始化器、对象初始化器或一元运算符触发不可捕获的堆栈溢出异常，导致宿主进程立即终止。

CVSS 7.5 · High EPSS 0.34% · P25

Affected Version Matrix 1

VendorProduct Version RangeStatus
scriban scriban 6.6.0≤ 7.2.0 affected
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I. Basic Information for CVE-2026-74783

Vulnerability Information
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Vulnerability Title
Scriban 6.6.0 through 7.2.0 Parser Recursion Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Scriban versions 6.6.0 through 7.2.0 contain a non-enforcing ExpressionDepthLimit guard that fails to stop recursive descent parsing of deeply nested expressions. Attackers can supply templates with deeply nested parentheses, array initializers, object initializers, or unary operators to trigger an uncatchable StackOverflowException that immediately terminates the host process.
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
未经控制的递归
Source: CVE Program / CVE List V5
Vulnerability Title
scriban 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
scriban是scriban组织的一款高性能的文本模板引擎。 scriban 6.6.0版本至7.2.0版本存在资源管理错误漏洞，该漏洞源于ExpressionDepthLimit防护未强制执行，无法阻止深度嵌套表达式的递归下降解析，攻击者可通过提供深度嵌套的括号、数组初始化器、对象初始化器或一元运算符触发不可捕获的堆栈溢出异常，导致宿主进程立即终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
scriban scriban 6.6.0 ~ 7.2.0 -

II. Public POCs for CVE-2026-74783

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 36817 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-74783

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Vendor Advisories for CVE-2026-74783 (2)

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

CVE-2026-73061 9.8 CRITICAL Scriban before 7.2.2 Arbitrary Property Write via TypedObjectAccessor
CVE-2026-74790 9.1 CRITICAL Scriban before 7.0.0 MemberFilter Bypass via TemplateContext Cache
CVE-2026-74784 8.7 HIGH Scriban before 7.2.0 Denial of Service via array.insert_at
CVE-2026-74791 8.6 HIGH Scriban before 7.0.0 Authorization Bypass via Stale Include Cache
CVE-2026-74792 7.5 HIGH Scriban before 7.0.0 Stack Overflow via nested array initializers
CVE-2026-74788 7.5 HIGH Scriban before 7.0.0 Denial of Service via string.pad_left/pad_right
CVE-2026-74795 7.5 HIGH Scriban before 6.6.0 Denial of Service via Uncontrolled Recursion
CVE-2026-74787 7.5 HIGH Scriban before 7.0.0 Uncontrolled Recursion via object.to_json
CVE-2026-74794 7.5 HIGH Scriban before 6.6.0 Denial of Service via Infinite Recursion
CVE-2026-74789 7.5 HIGH Scriban before 7.0.0 LoopLimit Bypass via Built-in Operations
CVE-2026-73062 7.5 HIGH Scriban 3.0.0 through 7.2.0 Denial of Service via Array Multiplication
CVE-2026-73060 7.5 HIGH Scriban 3.0.0 through 7.2.5 Denial of Service via ScriptRange.Multiply
CVE-2026-74785 6.5 MEDIUM Scriban before 7.0.0 Denial of Service via Unbounded Resource Consumption
CVE-2026-74786 6.5 MEDIUM Scriban before 7.0.0 Denial of Service via Unbounded Template Output

IV. Related Vulnerabilities

Same product: scriban
Same vendor: scriban
Same weakness: CWE-674

V. Comments for CVE-2026-74783

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