Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery. The SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK returns that absolute path, for example /data/sftp, instead of the chrooted value /. The information disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it. No file contents, credentials, or access to paths outside the root directory are obtainable through this issue alone. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl. This issue affects OTP from OTP 17.0 before 29.0.2, 28.5.0.2 and 27.3.4.13 corresponding to ssh from 3.0.1 before 6.0.1, 5.5.2.1 and 5.2.11.8.

An update of the erlang package has been released.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-ef630b13b0 advisory.

    Fix for CVE-2026-48855

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-e692d95607 advisory.

    Fix for CVE-2026-48855

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the d87e41a4-64d4-11f1-ab11-4c526214c986 advisory.

    https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh reports:
    The SSH SFTP daemon's handling of SSH_FXP_READLINK returned               symbolic link targets containing the server's absolute               filesystem path, disclosing the backend root prefix to clients.
              The handler now strips the backend root prefix from symlink               targets before returning them.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd     module) allows File Discovery. The SSH_FXP_READLINK handler in ssh_sftpd sends the raw result of     file:read_link/2 to the client without calling chroot_filename/2 to strip the backend root prefix. An     authenticated SFTP client can create a symlink inside the chroot pointing to /; ssh_sftpd resolves the     target to the absolute backend root and stores it on disk. Reading the symlink back via SSH_FXP_READLINK     returns that absolute path, for example /data/sftp, instead of the chrooted value /. The information     disclosed is the absolute filesystem path of the SFTP root directory and of any symlink targets within it.
    No file contents, credentials, or access to paths outside the root directory are obtainable through this     issue alone. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl. This issue     affects OTP from OTP 17.0 before 29.0.2, 28.5.0.2 and 27.3.4.13 corresponding to ssh from 3.0.1 before     6.0.1, 5.5.2.1 and 5.2.11.8. (CVE-2026-48855)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
323235	Photon OS 4.0: Erlang PHSA-2026-4.0-1038	Nessus	PhotonOS Local Security Checks	high
322121	Fedora 44 : erlang (2026-ef630b13b0)	Nessus	Fedora Local Security Checks	low
322116	Fedora 43 : erlang (2026-e692d95607)	Nessus	Fedora Local Security Checks	low
321790	Photon OS 5.0: Erlang PHSA-2026-5.0-0883	Nessus	PhotonOS Local Security Checks	high
320578	FreeBSD : Erlang/OTP -- SFTP READLINK discloses server filesystem paths (d87e41a4-64d4-11f1-ab11-4c526214c986)	Nessus	FreeBSD Local Security Checks	low
320494	Linux Distros Unpatched Vulnerability : CVE-2026-48855	Nessus	Misc.	low

Detections

Analytics

CVE-2026-48855

low

Tenable Plugins

high

low

low

high

low

low