Skip to main content

Mondoo Vulnerability Intelligence

Curated by Mondoo Research, enhanced with AI

Resources

Search Vulnerabilities
Trending CVEs
Browse Ecosystems
Terminology
Blog

Open Source

cnquery
cnspec

Star us on GitHub!

Company

Mondoo Platform
About
Contact

© 2026 Mondoo, Inc.

Privacy Policy Terms of Service Imprint

Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-3449

CVE-2026-3449

MEDIUM4.8

Versions of the package @tootallnate/once before 3

Published Mar 3, 2026

Modified Yesterday

Details

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.

References

https://github.com/TooTallNate/once/commit/b9f43cc5259bee2952d91ad3cdbd201a82df448a

https://github.com/TooTallNate/once/issues/8

https://security.snyk.io/vuln/SNYK-JS-TOOTALLNATEONCE-15250612

https://www.cve.org/CVERecord?id=CVE-2026-3449

CVSS Analysis

CVSS v4.0

4.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

NoneVI:N

Vuln. Availability

LowVA:L

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

4.8/CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedMar 3, 2026

ModifiedMar 3, 2026

CVE-2026-3449 | Mondoo Vulnerability Intelligence