{
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              "content": {
                "id": "CVE-2026-32147",
                "options": [
                  {
                    "Exploitation": "none"
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                    "Automatable": "no"
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                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-04-21T13:11:06.946869Z",
                "version": "2.0.3"
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              "type": "ssvc"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
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        {
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            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
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          "defaultStatus": "unknown",
          "modules": [
            "ssh_sftpd"
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          "packageName": "otp",
          "packageURL": "pkg:software-id/erlang.org/otp",
          "product": "OTP",
          "programFiles": [
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          "programRoutines": [
            {
              "name": "ssh_sftpd:do_open/4"
            },
            {
              "name": "ssh_sftpd:handle_op/4"
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          "vendor": "Erlang",
          "versions": [
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              "changes": [
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                  "at": "26.2.5.20",
                  "status": "unaffected"
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                {
                  "at": "27.3.4.11",
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                {
                  "at": "28.4.3",
                  "status": "unaffected"
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              "status": "affected",
              "version": "17.0",
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          "defaultStatus": "unknown",
          "modules": [
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          "packageName": "ssh",
          "packageURL": "pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
          "product": "OTP",
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              "name": "ssh_sftpd:do_open/4"
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              "name": "ssh_sftpd:handle_op/4"
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          "repo": "https://github.com/erlang/otp",
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                  "at": "5.1.4.15",
                  "status": "unaffected"
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                  "at": "5.2.11.7",
                  "status": "unaffected"
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                {
                  "at": "5.5.2",
                  "status": "unaffected"
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              "version": "3.0.1",
              "versionType": "otp"
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            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
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          "packageURL": "pkg:github/erlang/otp",
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              "name": "ssh_sftpd:do_open/4"
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              "name": "ssh_sftpd:handle_op/4"
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          "repo": "https://github.com/erlang/otp",
          "vendor": "Erlang",
          "versions": [
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              "lessThan": "28c5d5a6c5f873dc701b597276271763e7d1c004",
              "status": "affected",
              "version": "07b8f441ca711f9812fad9e9115bab3c3aa92f79",
              "versionType": "git"
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          "lang": "en",
          "supportingMedia": [
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              "value": "\u003cp\u003eThe SFTP subsystem must be configured with the \u003ccode\u003eroot\u003c/code\u003e option in \u003ccode\u003essh_sftpd:subsystem_spec/1\u003c/code\u003e. The \u003ccode\u003eroot\u003c/code\u003e option is not set by default.\u003c/p\u003e"
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              "type": "text/markdown",
              "value": "The SFTP subsystem must be configured with the `root` option in `ssh_sftpd:subsystem_spec/1`. The `root` option is not set by default."
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          "value": "The SFTP subsystem must be configured with the root option in ssh_sftpd:subsystem_spec/1. The root option is not set by default."
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                  "vulnerable": true
                },
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                  "vulnerable": true
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      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "John Downey"
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        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Micha\u0142 W\u0105sowski"
        },
        {
          "lang": "en",
          "type": "remediation reviewer",
          "value": "Jakub Witczak"
        }
      ],
      "datePublic": "2026-04-21T12:01:20.000Z",
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              "value": "\u003cp\u003eImproper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in Erlang OTP \u003ccode\u003essh\u003c/code\u003e (\u003ccode\u003essh_sftpd\u003c/code\u003e module) allows an authenticated SFTP user to modify file attributes outside the configured chroot directory.\u003c/p\u003e\n\u003cp\u003eThe SFTP daemon (\u003ccode\u003essh_sftpd\u003c/code\u003e) stores the raw, user-supplied path in file handles instead of the chroot-resolved path. When \u003ccode\u003eSSH_FXP_FSETSTAT\u003c/code\u003e is issued on such a handle, file attributes (permissions, ownership, timestamps) are modified on the real filesystem path, bypassing the root directory boundary entirely.\u003c/p\u003e\n\u003cp\u003eAny authenticated SFTP user on a server configured with the \u003ccode\u003eroot\u003c/code\u003e option can modify file attributes of files outside the intended chroot boundary. The prerequisite is that a target file must exist on the real filesystem at the same relative path. Note that this vulnerability only allows modification of file attributes; file contents cannot be read or altered through this attack vector.\u003c/p\u003e\n\u003cp\u003eIf the SSH daemon runs as \u003ccode\u003eroot\u003c/code\u003e, this enables direct privilege escalation: an attacker can set the setuid bit on any binary, change ownership of sensitive files, or make system configuration world-writable.\u003c/p\u003e\n\u003cp\u003eThis vulnerability is associated with program files \u003ccode\u003elib/ssh/src/ssh_sftpd.erl\u003c/code\u003e and program routines \u003ccode\u003essh_sftpd:do_open/4\u003c/code\u003e and \u003ccode\u003essh_sftpd:handle_op/4\u003c/code\u003e.\u003c/p\u003e\n\u003cp\u003eThis issue affects OTP from OTP\u0026nbsp;17.0 before OTP\u0026nbsp;26.2.5.20, OTP\u0026nbsp;27.3.4.11, and OTP\u0026nbsp;28.4.3, corresponding to ssh from 3.0.1 before 5.1.4.15, 5.2.11.7, and 5.5.2. Whether OTP before OTP\u0026nbsp;17.0, corresponding to ssh before 3.0.1, is affected is unknown.\u003c/p\u003e"
            },
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              "type": "text/markdown",
              "value": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in Erlang OTP `ssh` (`ssh_sftpd` module) allows an authenticated SFTP user to modify file attributes outside the configured chroot directory.\n\nThe SFTP daemon (`ssh_sftpd`) stores the raw, user-supplied path in file handles instead of the chroot-resolved path. When `SSH_FXP_FSETSTAT` is issued on such a handle, file attributes (permissions, ownership, timestamps) are modified on the real filesystem path, bypassing the root directory boundary entirely.\n\nAny authenticated SFTP user on a server configured with the `root` option can modify file attributes of files outside the intended chroot boundary. The prerequisite is that a target file must exist on the real filesystem at the same relative path. Note that this vulnerability only allows modification of file attributes; file contents cannot be read or altered through this attack vector.\n\nIf the SSH daemon runs as `root`, this enables direct privilege escalation: an attacker can set the setuid bit on any binary, change ownership of sensitive files, or make system configuration world-writable.\n\nThis vulnerability is associated with program files `lib/ssh/src/ssh_sftpd.erl` and program routines `ssh_sftpd:do_open/4` and `ssh_sftpd:handle_op/4`.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a026.2.5.20, OTP\u00a027.3.4.11, and OTP\u00a028.4.3, corresponding to ssh from 3.0.1 before 5.1.4.15, 5.2.11.7, and 5.5.2. Whether OTP before OTP\u00a017.0, corresponding to ssh before 3.0.1, is affected is unknown."
            }
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          "value": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in Erlang OTP ssh (ssh_sftpd module) allows an authenticated SFTP user to modify file attributes outside the configured chroot directory.\n\nThe SFTP daemon (ssh_sftpd) stores the raw, user-supplied path in file handles instead of the chroot-resolved path. When SSH_FXP_FSETSTAT is issued on such a handle, file attributes (permissions, ownership, timestamps) are modified on the real filesystem path, bypassing the root directory boundary entirely.\n\nAny authenticated SFTP user on a server configured with the root option can modify file attributes of files outside the intended chroot boundary. The prerequisite is that a target file must exist on the real filesystem at the same relative path. Note that this vulnerability only allows modification of file attributes; file contents cannot be read or altered through this attack vector.\n\nIf the SSH daemon runs as root, this enables direct privilege escalation: an attacker can set the setuid bit on any binary, change ownership of sensitive files, or make system configuration world-writable.\n\nThis vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl and program routines ssh_sftpd:do_open/4 and ssh_sftpd:handle_op/4.\n\nThis issue affects OTP from OTP\u00a017.0 before OTP\u00a026.2.5.20, OTP\u00a027.3.4.11, and OTP\u00a028.4.3, corresponding to ssh from 3.0.1 before 5.1.4.15, 5.2.11.7, and 5.5.2. Whether OTP before OTP\u00a017.0, corresponding to ssh before 3.0.1, is affected is unknown."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-126",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-126 Path Traversal"
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      ],
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
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          "descriptions": [
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              "cweId": "CWE-22",
              "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory",
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      "providerMetadata": {
        "dateUpdated": "2026-11-11T19:21:07.336Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
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      "references": [
        {
          "name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) in SFTP chroot",
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/erlang/otp/security/advisories/GHSA-28jg-mw9x-hpm5"
        },
        {
          "name": "EEF CNA record for CVE-2026-32147",
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-32147.html"
        },
        {
          "name": "OSV record EEF-CVE-2026-32147",
          "tags": [
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          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-32147"
        },
        {
          "name": "Erlang/OTP version ordering",
          "tags": [
            "x_version-scheme"
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          "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
        },
        {
          "name": "Introducing commit 07b8f44 in erlang/otp",
          "tags": [
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          "url": "https://github.com/erlang/otp/commit/07b8f441ca711f9812fad9e9115bab3c3aa92f79"
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        }
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      "source": {
        "discovery": "EXTERNAL"
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      "title": "SFTP chroot bypass via path traversal in SSH_FXP_FSETSTAT",
      "workarounds": [
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              "value": "\u003cul\u003e\n\u003cli\u003eDo not use the \u003ccode\u003eroot\u003c/code\u003e option in \u003ccode\u003essh_sftpd:subsystem_spec/1\u003c/code\u003e, and instead rely on OS-level chroot or container isolation to confine SFTP users.\u003c/li\u003e\n\u003cli\u003eEnsure the Erlang VM is not running as a privileged OS user. Running the VM as an unprivileged user limits the impact of this vulnerability, since attribute modifications are constrained by that user\u0027s OS-level permissions.\u003c/li\u003e\n\u003c/ul\u003e"
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              "value": "* Do not use the `root` option in `ssh_sftpd:subsystem_spec/1`, and instead rely on OS-level chroot or container isolation to confine SFTP users.\n* Ensure the Erlang VM is not running as a privileged OS user. Running the VM as an unprivileged user limits the impact of this vulnerability, since attribute modifications are constrained by that user\u0027s OS-level permissions."
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          "value": "* Do not use the root option in ssh_sftpd:subsystem_spec/1, and instead rely on OS-level chroot or container isolation to confine SFTP users.\n* Ensure the Erlang VM is not running as a privileged OS user. Running the VM as an unprivileged user limits the impact of this vulnerability, since attribute modifications are constrained by that user\u0027s OS-level permissions."
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    "assignerShortName": "EEF",
    "cveId": "CVE-2026-32147",
    "datePublished": "2026-04-21T12:01:20.350Z",
    "dateReserved": "2026-03-10T22:37:29.213Z",
    "dateUpdated": "2026-11-11T19:21:07.336Z",
    "state": "PUBLISHED"
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