CVE-2026-3449
Quick assessment
Affected
n/a @tootallnate/once
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
@tootallnate/once是Nathan Rajlich个人开发者的一个JavaScript代码库。 @tootallnate/once 3.0.1之前版本存在安全漏洞，该漏洞源于使用AbortSignal选项时，Promise解析存在控制流作用域错误，信号中止后Promise保持永久挂起状态，导致任何await或.then()使用无限期挂起，这可能引起控制流泄漏，导致请求停滞、工作线程阻塞或应用程序可用性降低。
Possible ATT&CK Techniques 2 AI
T1499 · Endpoint Denial of Service T1499.002 · Service Exhaustion FloodAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | @tootallnate/once | < 3.0.1 |
affected |
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I. Basic Information for CVE-2026-3449
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Versions of the package @tootallnate/once before 3.0.1 are vulnerable to Incorrect Control Flow Scoping in promise resolving when AbortSignal option is used. The Promise remains in a permanently pending state after the signal is aborted, causing any await or .then() usage to hang indefinitely. This can cause a control-flow leak that can lead to stalled requests, blocked workers, or degraded application availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
控制流范围控制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
@tootallnate/once 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
@tootallnate/once是Nathan Rajlich个人开发者的一个JavaScript代码库。 @tootallnate/once 3.0.1之前版本存在安全漏洞，该漏洞源于使用AbortSignal选项时，Promise解析存在控制流作用域错误，信号中止后Promise保持永久挂起状态，导致任何await或.then()使用无限期挂起，这可能引起控制流泄漏，导致请求停滞、工作线程阻塞或应用程序可用性降低。
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 |
|---|---|---|---|---|
| - | @tootallnate/once | 0 ~ 3.0.1 | - |
|
II. Public POCs for CVE-2026-3449
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-3449 (1)
Vendor Advisories for CVE-2026-3449 (1)
Other References for CVE-2026-3449 (1)
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IV. Related Vulnerabilities
V. Comments for CVE-2026-3449
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