{"id":"CVE-2025-22871","state":"PUBLISHED","title":"Request smuggling due to acceptance of invalid chunked data in net/http","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.","publishedAt":"2025-04-08T20:04:34.769Z","updatedAt":"2026-05-12T12:04:11.015Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"Go","products":["Go standard library net/http/internal"],"affected":[{"vendor":"Go standard library","product":"net/http/internal","packageName":"net/http/internal","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.23.8","versionType":"semver"},{"version":"1.24.0-0","status":"affected","lessThan":"1.24.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"readChunkLine"},{"name":"chunkedReader.Read"}]}],"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"],"weaknesses":[],"ingestedAt":"2026-10-29T20:08:39.238Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/22xxx/CVE-2025-22871.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-22871","state":"PUBLISHED","datePublished":"2025-04-08T20:04:34.769Z","dateUpdated":"2026-05-12T12:04:11.015Z","assignerShortName":"Go","assignerOrgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateReserved":"2025-01-08T19:11:42.834Z"},"containers":{"cna":{"title":"Request smuggling due to acceptance of invalid chunked data in net/http","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Go standard library","product":"net/http/internal","packageName":"net/http/internal","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"1.23.8","versionType":"semver"},{"version":"1.24.0-0","status":"affected","lessThan":"1.24.2","versionType":"semver"}],"collectionURL":"https://pkg.go.dev","programRoutines":[{"name":"readChunkLine"},{"name":"chunkedReader.Read"}]}],"references":[{"url":"https://go.dev/cl/652998"},{"url":"https://go.dev/issue/71988"},{"url":"https://groups.google.com/g/golang-announce/c/Y2uBTVKjBQk"},{"url":"https://pkg.go.dev/vuln/GO-2025-3563"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')"}]}],"providerMetadata":{"shortName":"Go","orgId":"1bb62c36-49e3-4200-9d77-64a1400537cc","dateUpdated":"2025-04-08T20:04:34.769Z"},"credits":[{"lang":"en","value":"Jeppe Bonde Weikop"}]},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2025/04/04/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-04-08T21:03:21.913Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-04-18T14:57:03.151639Z","id":"CVE-2025-22871","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-18T14:57:31.331Z"}},{"affected":[{"vendor":"Siemens","product":"SENTRON 7KT PAC1261 Data Manager","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V2.1.0","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-783943.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-05-12T12:04:11.015Z"},"x_adpType":"supplier"}]}}}