{"affected":[{"defaultStatus":"unknown","ecosystem":"software-id","packageName":"otp","product":"OTP","source":"CNA: EEF","vendor":"Erlang","versions":[{"changes":[{"at":"27.3.4.17","status":"unaffected"},{"at":"28.5.0.6","status":"unaffected"},{"at":"29.0.6","status":"unaffected"}],"lessThan":"*","status":"affected","version":"17.0","versionType":"otp"}]},{"defaultStatus":"unknown","ecosystem":"otp","packageName":"inets","product":"OTP","source":"CNA: EEF","vendor":"Erlang","versions":[{"changes":[{"at":"9.3.2.7","status":"unaffected"},{"at":"9.6.2.3","status":"unaffected"},{"at":"9.7.2","status":"unaffected"}],"lessThan":"*","status":"affected","version":"5.10","versionType":"otp"}]},{"defaultStatus":"unknown","ecosystem":"github","packageName":"erlang/otp","product":"OTP","source":"CNA: EEF","vendor":"Erlang","versions":[{"changes":[{"at":"220d618d2479a7180b4a06d0c5aacfaa4af4a85b","status":"unaffected"},{"at":"273d8958de38ff2a7fe0c5dcc5b6bfe6f65717f3","status":"unaffected"},{"at":"e640d599287d2eba919e6f13b91f042d7dbe6ff4","status":"unaffected"}],"lessThan":"*","status":"affected","version":"84adefa331c4159d432d22840663c38f155cd4c1","versionType":"git"},{"lessThan":"*","status":"unaffected","version":"220d618d2479a7180b4a06d0c5aacfaa4af4a85b","versionType":"git"},{"lessThan":"*","status":"unaffected","version":"273d8958de38ff2a7fe0c5dcc5b6bfe6f65717f3","versionType":"git"},{"lessThan":"*","status":"unaffected","version":"e640d599287d2eba919e6f13b91f042d7dbe6ff4","versionType":"git"}]}],"cveId":"CVE-2026-66357","cwes":["CWE-444"],"description":"httpd has never implemented obs-fold (RFC 2616 §2.2 / RFC 7230 §3.2.4 header continuation lines). Every CRLF followed by a non-CRLF octet unconditionally starts a new header. This missing feature became a security concern as the understanding of HTTP request smuggling attacks evolved.\n\nThis issue affects OTP from OTP 17.0 before OTP 27.3.4.17, OTP 28.5.0.6, and OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, 9.6.2.3, and 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.","epss":{"date":"2026-11-10","percentile":0.47869,"score":0.00577},"exploits":[],"kev":null,"metrics":[{"score":8.3,"severity":"high","source":"CNA: EEF","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:L/SA:N","version":"4.0"}],"modifiedAt":1794405247717,"publishedAt":1788273650526,"references":[{"source":"CNA: EEF","tags":["vendor-advisory"],"url":"https://github.com/erlang/otp/security/advisories/GHSA-qh2f-33hj-37qf"},{"source":"CNA: EEF","tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-66357.html"},{"source":"CNA: EEF","tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-66357"},{"source":"CNA: EEF","tags":["x_version-scheme"],"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions"},{"source":"CNA: EEF","tags":["patch"],"url":"https://github.com/erlang/otp/commit/220d618d2479a7180b4a06d0c5aacfaa4af4a85b"},{"source":"CNA: EEF","tags":["patch"],"url":"https://github.com/erlang/otp/commit/273d8958de38ff2a7fe0c5dcc5b6bfe6f65717f3"},{"source":"CNA: EEF","tags":["patch"],"url":"https://github.com/erlang/otp/commit/e640d599287d2eba919e6f13b91f042d7dbe6ff4"}],"remediation":[{"kind":"fix","source":"CNA: EEF","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/erlang/otp/commit/220d618d2479a7180b4a06d0c5aacfaa4af4a85b"},{"kind":"fix","source":"CNA: EEF","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/erlang/otp/commit/273d8958de38ff2a7fe0c5dcc5b6bfe6f65717f3"},{"kind":"fix","source":"CNA: EEF","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/erlang/otp/commit/e640d599287d2eba919e6f13b91f042d7dbe6ff4"}],"revision":"6977f5552bddbfd82054865b7452fa2fd7d1ca1f945a18006f6b803e2e7702ef","sources":[{"modifiedAt":1794405247717,"name":"CNA: EEF","retrievedAt":1794406194355,"url":"https://www.cve.org/CVERecord?id=CVE-2026-66357"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794406224828,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-66357"}],"ssvc":{"assessedAt":1788278160806,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"inets,httpd:HTTP Request Smuggling via obs-fold Header Continuation","updatedAt":1794406224828}