Vulnerability Description
The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.
CVSS Score
CRITICAL
References
- https://go.dev/cl/652998
- https://go.dev/issue/71988
- https://groups.google.com/g/golang-announce/c/Y2uBTVKjBQk
- https://pkg.go.dev/vuln/GO-2025-3563
- http://www.openwall.com/lists/oss-security/2025/04/04/4
- https://cert-portal.siemens.com/productcert/html/ssa-783943.html
FAQ
What is CVE-2025-22871?
CVE-2025-22871 is a vulnerability with a CVSS score of 9.1 (CRITICAL). The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server tha...
How severe is CVE-2025-22871?
CVE-2025-22871 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-22871?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.