Memory Allocation Vulnerability in js-beautify by Beautifier
CVE-2026-109149

6.9MEDIUM

Key Information:

Vendor

Beautifier

Vendor
CVE Published:
13 October 2026

What is CVE-2026-109149?

A vulnerability has been detected in js-beautify versions up to 1.15.1 and 2.0.3, where an unknown function is susceptible to exploitation. This weakness allows for uncontrolled memory allocation, which could be leveraged by an attacker to manipulate the application's operation remotely, potentially causing Denial of Service conditions. The vendor's lack of response to initial disclosures raises concerns about addressing this critical security issue.

Affected Version(s)

js-beautify 1.15.0

js-beautify 1.15.1

js-beautify 2.0.0

References

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mohammedix88 (VulDB User)
VulDB CNA Team
.