CVE-2023-29197
5.3 · MEDIUMOverview
CVE-2023-29197 is a medium-severity vulnerability affecting guzzlephp psr-7. It was published on April 17, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Affected versions are subject to improper header parsing. An attacker could sneak in a newline (\n) into both the header names and values. While the specification states that \r\n\r\n is used to terminate the header list, many servers in the wild will also accept \n\n. This is a follow-up to CVE-2022-24775 where the fix was incomplete. The issue has been patched in versions 1.9.1 and 2.4.5. There are no known workarounds for this vulnerability. Users are advised to upgrade.
Remediation
Check the references section for vendor advisories and patches from guzzlephp. Update psr-7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| guzzlephp | psr-7 | >= 0, < 1.9.1 | Affected |
References
Frequently Asked Questions
What is CVE-2023-29197?
CVE-2023-29197 is a medium-severity vulnerability affecting guzzlephp psr-7. It was published on April 17, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).
How severe is CVE-2023-29197?
This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-29197?
Check the references section for vendor advisories and patches from guzzlephp. Update psr-7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-29197?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-29197 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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