SB2023041755 - Improper header validation in Slim-Psr7
Published: April 17, 2023 Updated: April 29, 2025
Security Bulletin ID
SB2023041755
CSH Severity
Low
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) Input validation error (CVE-ID: CVE-2023-30536)
The vulnerability allows a remote attacker to alter application's behavior.
The vulnerability exists due to insufficient validation of HTTP headers with newline characters. A remote attacker with ability to control the header names that are passed to Slilm-Psr7 can craft invalid messages, possibly causing application errors or invalid HTTP requests being sent out with an PSR-18 HTTP client.
Remediation
Install update from vendor's website.