{"cve":"CVE-2025-22871","nvd":{"published":"2025-04-08T20:15:20.183","modified":"2026-06-17T08:50:41.163","status":"Deferred","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":[],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:00:57.946988208+00:00"},"epss":{"cve":"CVE-2025-22871","score":0.00826,"percentile":0.57433,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GO-2025-3563","url":"https://osv.dev/vulnerability/GO-2025-3563","summary":"Request smuggling due to acceptance of invalid chunked data in net/http","modified":"2026-02-17T16:13:52.395126Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.23.8",">=1.24.0-0 <1.24.2"],"fixed":["1.23.8","1.24.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}