SB20260919188 - Uncontrolled Recursion in postcss-selector-parser
Published: September 19, 2026
Security Bulletin ID
SB20260919188
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Uncontrolled Recursion (CVE-ID: CVE-2026-9358)
CWE-ID: CWE-674 - Uncontrolled Recursion
CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in the toString function in src/selectors/container.js of the AST serialization component when serializing a manipulated AST. A remote attacker can execute a manipulation to cause a denial of service.
User interaction is required.
Remediation
Install update from vendor's website.