critical
CVE-2026-66357
otp: inets: Erlang/OTP inets: HTTP Request Smuggling via improper header parsing
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.
Severity by source
Red Hat9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
Trivy's own label is CRITICAL. Rated critical by Red Hat. Rated lower by Azure Linux (high), Ubuntu (medium).
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. 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.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| Azure Linux 3.0 | erlang | 0:26.2.5.21-6.azl3 |
| debian 11 | erlang | no fix listed |
| debian 12 | erlang | no fix listed |
| debian 13 | erlang | 1:27.3.4.1+dfsg-1+deb13u4 |
| debian 14 | erlang | 1:29.0.6+dfsg-1 |
| echo | erlang | 1:27.3.4.1+dfsg-1+deb13u4 |
| rapidfort alpine 3.20 | erlang | no fix listed |
| rapidfort alpine 3.21 | erlang | no fix listed |
| rapidfort alpine 3.22 | erlang | no fix listed |
| rapidfort alpine 3.23 | erlang | no fix listed |
| rapidfort alpine 3.24 | erlang | no fix listed |
| rapidfort debian 12 | erlang | 1:27.3.4.1+dfsg-1+deb13u4, 1:29.0.6+dfsg-1 |
Show all 105 entries from 23 sources
| Source | Package | Fixed in |
|---|---|---|
| Azure Linux 3.0 | erlang | 0:26.2.5.21-6.azl3 |
| debian 11 | erlang | no fix listed |
| debian 12 | erlang | no fix listed |
| debian 13 | erlang | 1:27.3.4.1+dfsg-1+deb13u4 |
| debian 14 | erlang | 1:29.0.6+dfsg-1 |
| echo | erlang | 1:27.3.4.1+dfsg-1+deb13u4 |
| rapidfort alpine 3.20 | erlang | no fix listed |
| rapidfort alpine 3.21 | erlang | no fix listed |
| rapidfort alpine 3.22 | erlang | no fix listed |
| rapidfort alpine 3.23 | erlang | no fix listed |
| rapidfort alpine 3.24 | erlang | no fix listed |
| rapidfort debian 12 | erlang | 1:27.3.4.1+dfsg-1+deb13u4, 1:29.0.6+dfsg-1 |
| rapidfort debian 13 | erlang | 1:27.3.4.1+dfsg-1+deb13u4, 1:29.0.6+dfsg-1 |
| rapidfort fedora 43 | erlang | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-asn1 | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-common_test | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-compiler | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-crypto | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-debugger | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-dialyzer | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-diameter | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-doc | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-edoc | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-eldap | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-erl_docgen | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-erl_interface | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-erts | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-et | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-eunit | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-examples | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-ftp | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-gdb-tools | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-inets | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-jinterface | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-kernel | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-megaco | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-mnesia | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-observer | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-odbc | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-os_mon | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-parsetools | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-public_key | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-reltool | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-runtime_tools | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-sasl | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-snmp | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-src | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-ssh | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-ssl | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-stdlib | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-syntax_tools | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-tftp | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-tools | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-wx | 26.2.5.21-11.fc43 |
| rapidfort fedora 43 | erlang-xmerl | 26.2.5.21-11.fc43 |
| rapidfort Oracle Linux 9 | erlang | no fix listed |
| rapidfort Oracle Linux 9 | erlang-asn1 | no fix listed |
| rapidfort Oracle Linux 9 | erlang-common_test | no fix listed |
| rapidfort Oracle Linux 9 | erlang-compiler | no fix listed |
| rapidfort Oracle Linux 9 | erlang-crypto | no fix listed |
| rapidfort Oracle Linux 9 | erlang-debugger | no fix listed |
| rapidfort Oracle Linux 9 | erlang-dialyzer | no fix listed |
| rapidfort Oracle Linux 9 | erlang-diameter | no fix listed |
| rapidfort Oracle Linux 9 | erlang-doc | no fix listed |
| rapidfort Oracle Linux 9 | erlang-edoc | no fix listed |
| rapidfort Oracle Linux 9 | erlang-eldap | no fix listed |
| rapidfort Oracle Linux 9 | erlang-erl_docgen | no fix listed |
| rapidfort Oracle Linux 9 | erlang-erl_interface | no fix listed |
| rapidfort Oracle Linux 9 | erlang-erts | no fix listed |
| rapidfort Oracle Linux 9 | erlang-et | no fix listed |
| rapidfort Oracle Linux 9 | erlang-eunit | no fix listed |
| rapidfort Oracle Linux 9 | erlang-examples | no fix listed |
| rapidfort Oracle Linux 9 | erlang-ftp | no fix listed |
| rapidfort Oracle Linux 9 | erlang-gdb-tools | no fix listed |
| rapidfort Oracle Linux 9 | erlang-inets | no fix listed |
| rapidfort Oracle Linux 9 | erlang-jinterface | no fix listed |
| rapidfort Oracle Linux 9 | erlang-kernel | no fix listed |
| rapidfort Oracle Linux 9 | erlang-megaco | no fix listed |
| rapidfort Oracle Linux 9 | erlang-mnesia | no fix listed |
| rapidfort Oracle Linux 9 | erlang-observer | no fix listed |
| rapidfort Oracle Linux 9 | erlang-odbc | no fix listed |
| rapidfort Oracle Linux 9 | erlang-os_mon | no fix listed |
| rapidfort Oracle Linux 9 | erlang-parsetools | no fix listed |
| rapidfort Oracle Linux 9 | erlang-public_key | no fix listed |
| rapidfort Oracle Linux 9 | erlang-reltool | no fix listed |
| rapidfort Oracle Linux 9 | erlang-runtime_tools | no fix listed |
| rapidfort Oracle Linux 9 | erlang-sasl | no fix listed |
| rapidfort Oracle Linux 9 | erlang-snmp | no fix listed |
| rapidfort Oracle Linux 9 | erlang-src | no fix listed |
| rapidfort Oracle Linux 9 | erlang-ssh | no fix listed |
| rapidfort Oracle Linux 9 | erlang-ssl | no fix listed |
| rapidfort Oracle Linux 9 | erlang-stdlib | no fix listed |
| rapidfort Oracle Linux 9 | erlang-syntax_tools | no fix listed |
| rapidfort Oracle Linux 9 | erlang-tftp | no fix listed |
| rapidfort Oracle Linux 9 | erlang-tools | no fix listed |
| rapidfort Oracle Linux 9 | erlang-wx | no fix listed |
| rapidfort Oracle Linux 9 | erlang-xmerl | no fix listed |
| rapidfort ubuntu 20.04 | erlang | 1:24.2.1+dfsg-1ubuntu0.7, 1:25.3.2.8+dfsg-1ubuntu4.7, 1:27.3.4.6+dfsg-1ubuntu0.1 |
| rapidfort ubuntu 22.04 | erlang | 1:24.2.1+dfsg-1ubuntu0.7, 1:25.3.2.8+dfsg-1ubuntu4.7, 1:27.3.4.6+dfsg-1ubuntu0.1 |
| rapidfort ubuntu 24.04 | erlang | 1:24.2.1+dfsg-1ubuntu0.7, 1:25.3.2.8+dfsg-1ubuntu4.7, 1:27.3.4.6+dfsg-1ubuntu0.1 |
| ubuntu 18.04-ESM | erlang | 1:20.2.2+dfsg-1ubuntu2+esm3 |
| ubuntu 20.04-ESM | erlang | 1:22.2.7+dfsg-1ubuntu0.5+esm2 |
| ubuntu 22.04 | erlang | 1:24.2.1+dfsg-1ubuntu0.7 |
| ubuntu 24.04 | erlang | 1:25.3.2.8+dfsg-1ubuntu4.7 |
| ubuntu 26.04 | erlang | 1:27.3.4.6+dfsg-1ubuntu0.1 |
References
- https://access.redhat.com/security/cve/CVE-2026-66357
- https://cna.erlef.org/cves/CVE-2026-66357.html
- 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/security/advisories/GHSA-qh2f-33hj-37qf
- https://nvd.nist.gov/vuln/detail/CVE-2026-66357
- https://osv.dev/vulnerability/EEF-CVE-2026-66357