CRLF injection in PSR-7 - #VU132301
Published: May 26, 2026
Vulnerability identifier: #VU132301
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Guzzle
Affected software:
PSR-7
PSR-7
Detailed vulnerability description
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data within URI Host component. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.
Remediation
Install updates from vendor's website.