CVE-2026-66357
- Source
- https://cve.org/CVERecord?id=CVE-2026-66357
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-66357.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-66357
- Aliases
-
- EEF-CVE-2026-66357
- GHSA-qh2f-33hj-37qf
- Downstream
- Published
- 2026-09-01T14:40:50Z
- Modified
- 2026-09-09T03:31:02Z
- Severity
-
- 8.3 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- inets,httpd:HTTP Request Smuggling via obs-fold Header Continuation
- Details
-
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.
This issue affects OTP from OTP 17.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to inets from 5.10 before 9.3.2.7, from 9.4 before 9.6.2.3, and from 9.7 before 9.7.2. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.
- Database specific
{ "cna_assigner": "EEF", "cwe_ids": [ "CWE-444" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66357.json", "unresolved_ranges": [ { "extracted_events": [ { "introduced": "5.10" }, { "fixed": "9.3.2.7" }, { "introduced": "9.4" }, { "fixed": "9.6.2.3" }, { "introduced": "9.7" }, { "fixed": "9.7.2" }, { "introduced": "84adefa331c4159d432d22840663c38f155cd4c1" }, { "fixed": "*" } ], "source": "AFFECTED_FIELD" } ] }- References
-
- https://cna.erlef.org/cves/CVE-2026-66357.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-66357
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66357.json
- https://github.com/erlang/otp/security/advisories/GHSA-qh2f-33hj-37qf
- https://nvd.nist.gov/vuln/detail/CVE-2026-66357
- https://github.com/erlang/otp/commit/220d618d2479a7180b4a06d0c5aacfaa4af4a85b
- https://github.com/erlang/otp/commit/273d8958de38ff2a7fe0c5dcc5b6bfe6f65717f3
- https://github.com/erlang/otp/commit/e640d599287d2eba919e6f13b91f042d7dbe6ff4
- https://github.com/erlang/otp
Affected packages
Git / github.com/erlang/otp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/erlang/otp
- Events
-
IntroducedIntroducedIntroducedFixedFixedFixedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "introduced": "17.0" }, { "fixed": "27.3.4.17" }, { "introduced": "28.0" }, { "fixed": "28.5.0.6" }, { "introduced": "29.0" }, { "fixed": "29.0.6" } ], "source": [ "AFFECTED_FIELD", "REFERENCES" ] }
Affected versions
OTP-17.*
OTP-17.0
OTP-18.*
OTP-18.0
OTP-18.0-rc1
OTP-19.*
OTP-19.0
OTP-19.0-rc1
OTP-19.0-rc2
OTP-20.*
OTP-20.0
OTP-20.0-rc1
OTP-20.0-rc2
OTP-21.*
OTP-21.0
OTP-21.0-rc1
OTP-21.0-rc2
OTP-22.*
OTP-22.0
OTP-22.0-rc1
OTP-22.0-rc2
OTP-22.0-rc3
OTP-23.*
OTP-23.0
OTP-23.0-rc1
OTP-23.0-rc2
OTP-23.0-rc3
OTP-24.*
OTP-24.0
OTP-24.0-rc1
OTP-24.0-rc2
OTP-24.0-rc3
OTP-25.*
OTP-25.0
OTP-25.0-rc1
OTP-25.0-rc2
OTP-25.0-rc3
OTP-26.*
OTP-26.0
OTP-26.0-rc1
OTP-26.0-rc2
OTP-26.0-rc3
OTP-27.*
OTP-27.0
OTP-27.0-rc1
OTP-27.0-rc2
OTP-27.0-rc3
OTP-27.1
OTP-27.2
OTP-27.3
OTP-27.3.1
OTP-27.3.2
OTP-27.3.3
OTP-27.3.4
OTP-27.3.4.1
OTP-27.3.4.10
OTP-27.3.4.11
OTP-27.3.4.12
OTP-27.3.4.13
OTP-27.3.4.14
OTP-27.3.4.15
OTP-27.3.4.16
OTP-27.3.4.2
OTP-27.3.4.3
OTP-27.3.4.4
OTP-27.3.4.5
OTP-27.3.4.6
OTP-27.3.4.7
OTP-27.3.4.8
OTP-27.3.4.9
OTP-28.*
OTP-28.0
OTP-28.1
OTP-28.4
OTP-28.5
OTP-28.5.0.1
OTP-28.5.0.2
OTP-28.5.0.3
OTP-28.5.0.4
OTP-28.5.0.5
OTP-29.*
OTP-29.0
OTP-29.0.1
OTP-29.0.2
OTP-29.0.3
OTP-29.0.4
OTP-29.0.5
Other
patch-base-27
patch-base-28