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Two compression algorithms are affected:  * zlib: Activates immediately after key exchange, enabling unauthenticated attacks * zlib@openssh.com: Activates post-authentication, enabling authenticated attacks  Each SSH packet can decompress ~255 MB from 256 KB of wire data (1029:1 amplification ratio). Multiple packets can rapidly exhaust available memory, causing OOM kills in memory-constrained environments.  This vulnerability is associated with program files lib/ssh/src/ssh_transport.erl and program routines ssh_transport:decompress/2, ssh_transport:handle_packet_part/4.  This issue affects OTP from OTP 17.0 until OTP 28.4.1, 27.3.4.9 and 26.2.5.18 corresponding to ssh from 3.0.1 until 5.5.1, 5.2.11.6 and 5.1.4.14.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23943","reference_id":"","reference_type":"","scores":[{"value":"0.00065","scoring_system":"epss","scoring_elements":"0.20428","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00065","scoring_system":"epss","scoring_elements":"0.20368","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00065","scoring_system":"epss","scoring_elements":"0.2036","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00065","scoring_system":"epss","scoring_elements":"0.2048","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00065","scoring_system":"epss","scoring_elements":"0.20467","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23943"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23943","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23943"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/erlang/otp/commit/0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4","reference_id":"0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://github.com/erlang/otp/commit/0c1c04b191f6ab940e8fcfabce39eb5a8a6440a4"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912","reference_id":"1130912","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912"},{"reference_url":"https://github.com/erlang/otp/commit/43a87b949bdff12d629a8c34146711d9da93b1b1","reference_id":"43a87b949bdff12d629a8c34146711d9da93b1b1","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://github.com/erlang/otp/commit/43a87b949bdff12d629a8c34146711d9da93b1b1"},{"reference_url":"https://github.com/erlang/otp/commit/93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3","reference_id":"93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://github.com/erlang/otp/commit/93073c3bd338c60cd2bae715ce6a1d4ffc1a8fd3"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"},{"reference_url":"https://cna.erlef.org/cves/CVE-2026-23943.html","reference_id":"CVE-2026-23943.html","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://cna.erlef.org/cves/CVE-2026-23943.html"},{"reference_url":"https://osv.dev/vulnerability/EEF-CVE-2026-23943","reference_id":"EEF-CVE-2026-23943","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-23943"},{"reference_url":"https://github.com/erlang/otp/security/advisories/GHSA-c836-qprm-jw9r","reference_id":"GHSA-c836-qprm-jw9r","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:01:40Z/"}],"url":"https://github.com/erlang/otp/security/advisories/GHSA-c836-qprm-jw9r"},{"reference_url":"https://www.erlang.org/doc/system/versions.html#order-of-versions","reference_id":"versions.html#order-of-versions","reference_type":"","scores":[{"value":"6.9","scoring_system":"cvssv4"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Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in Erlang OTP (inets httpd module) allows HTTP Request Smuggling.  This vulnerability is associated with program files lib/inets/src/http_server/httpd_request.erl and program routines httpd_request:parse_headers/7.  The server does not reject or normalize duplicate Content-Length headers. The earliest Content-Length in the request is used for body parsing while common reverse proxies (nginx, Apache httpd, Envoy) honor the last Content-Length value. This violates RFC 9112 Section 6.3 and allows front-end/back-end desynchronization, leaving attacker-controlled bytes queued as the start of the next request.  This issue affects OTP from OTP 17.0 until OTP 28.4.1, OTP 27.3.4.9 and OTP 26.2.5.18, corresponding to inets from 5.10 until 9.6.1, 9.3.2.3 and 9.1.0.5.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23941","reference_id":"","reference_type":"","scores":[{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09918","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09866","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09834","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09931","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00032","scoring_system":"epss","scoring_elements":"0.09945","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23941"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23941","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23941"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"4.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912","reference_id":"1130912","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912"},{"reference_url":"https://github.com/erlang/otp/commit/a4b46336fd25aa100ac602eb9a627aaead7eda18","reference_id":"a4b46336fd25aa100ac602eb9a627aaead7eda18","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://github.com/erlang/otp/commit/a4b46336fd25aa100ac602eb9a627aaead7eda18"},{"reference_url":"https://github.com/erlang/otp/commit/a761d391d8d08316cbd7d4a86733ba932b73c45b","reference_id":"a761d391d8d08316cbd7d4a86733ba932b73c45b","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://github.com/erlang/otp/commit/a761d391d8d08316cbd7d4a86733ba932b73c45b"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"},{"reference_url":"https://cna.erlef.org/cves/CVE-2026-23941.html","reference_id":"CVE-2026-23941.html","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://cna.erlef.org/cves/CVE-2026-23941.html"},{"reference_url":"https://github.com/erlang/otp/commit/e775a332f623851385ab6ddb866d9b150612ddf6","reference_id":"e775a332f623851385ab6ddb866d9b150612ddf6","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://github.com/erlang/otp/commit/e775a332f623851385ab6ddb866d9b150612ddf6"},{"reference_url":"https://osv.dev/vulnerability/EEF-CVE-2026-23941","reference_id":"EEF-CVE-2026-23941","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-23941"},{"reference_url":"https://github.com/erlang/otp/security/advisories/GHSA-w4jc-9wpv-pqh7","reference_id":"GHSA-w4jc-9wpv-pqh7","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:L"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:00:50Z/"}],"url":"https://github.com/erlang/otp/security/advisories/GHSA-w4jc-9wpv-pqh7"},{"reference_url":"https://www.erlang.org/doc/system/versions.html#order-of-versions","reference_id":"versions.html#order-of-versions","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_ele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Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP (ssh_sftpd module) allows Path Traversal.  This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl and program routines ssh_sftpd:is_within_root/2.  The SFTP server uses string prefix matching via lists:prefix/2 rather than proper path component validation when checking if a path is within the configured root directory. This allows authenticated users to access sibling directories that share a common name prefix with the configured root directory. For example, if root is set to /home/user1, paths like /home/user10 or /home/user1_backup would incorrectly be considered within the root.  This issue affects OTP from OTP 17.0 until OTP 28.4.1, OTP 27.3.4.9 and OTP 26.2.5.18, corresponding to ssh from 3.0.1 until 5.5.1, 5.2.11.6 and 5.1.4.14.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23942","reference_id":"","reference_type":"","scores":[{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11793","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11724","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11712","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11833","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00038","scoring_system":"epss","scoring_elements":"0.11827","published_at":"2026-06-06T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-23942"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23942","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-23942"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912","reference_id":"1130912","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1130912"},{"reference_url":"https://github.com/erlang/otp/commit/27688a824f753d4c16371dc70e88753fb410590b","reference_id":"27688a824f753d4c16371dc70e88753fb410590b","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://github.com/erlang/otp/commit/27688a824f753d4c16371dc70e88753fb410590b"},{"reference_url":"https://github.com/erlang/otp/commit/5ed603a1211b83b8be2d1fc06d3f3bf30c3c9759","reference_id":"5ed603a1211b83b8be2d1fc06d3f3bf30c3c9759","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://github.com/erlang/otp/commit/5ed603a1211b83b8be2d1fc06d3f3bf30c3c9759"},{"reference_url":"https://github.com/erlang/otp/commit/9e0ac85d3485e7898e0da88a14be0ee2310a3b28","reference_id":"9e0ac85d3485e7898e0da88a14be0ee2310a3b28","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://github.com/erlang/otp/commit/9e0ac85d3485e7898e0da88a14be0ee2310a3b28"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"},{"reference_url":"https://cna.erlef.org/cves/CVE-2026-23942.html","reference_id":"CVE-2026-23942.html","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://cna.erlef.org/cves/CVE-2026-23942.html"},{"reference_url":"https://osv.dev/vulnerability/EEF-CVE-2026-23942","reference_id":"EEF-CVE-2026-23942","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-23942"},{"reference_url":"https://github.com/erlang/otp/security/advisories/GHSA-4749-w85x-hw9h","reference_id":"GHSA-4749-w85x-hw9h","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2026-03-13T16:02:31Z/"}],"url":"https://github.com/erlang/otp/security/advisories/GHSA-4749-w85x-hw9h"},{"reference_url":"https://www.erlang.org/doc/system/versions.html#order-of-versions","reference_id":"versions.html#order-of-versions","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv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