SB2026101242 - Reliance on Cookies without Validation and Integrity Checking in Happy DOM
Published: October 12, 2026
Security Bulletin ID
SB2026101242
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Reliance on Cookies without Validation and Integrity Checking (CVE-ID: N/A)
CWE-ID: CWE-565 - Reliance on Cookies without Validation and Integrity Checking
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to reliance on cookies without validation and integrity checking in the CookieContainer.ts and CookieURLUtility components. A remote attacker can inject forged session cookies into requests made to victim origins.
Remediation
Install update from vendor's website.