CVE-2026-32147 Affecting erlang package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Jul 2026
- disclosed21 Apr 2026
Introduced: 21 Apr 2026
CVE-2026-32147 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest erlang.
NVD Description
Note: Versions mentioned in the description apply only to the upstream erlang package and not the erlang package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Erlang OTP ssh (ssh_sftpd module) allows an authenticated SFTP user to modify file attributes outside the configured chroot directory.
The 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.
Any 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.
If 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.
This 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.
This issue affects OTP from OTP 17.0 before OTP 28.4.3, OTP 27.3.4.11 and OTP 26.2.5.20, corresponding to ssh from 3.0.1 before 5.5.3, 5.2.11.7 and 5.1.4.15.
References
- https://advisory.echohq.com/cve/CVE-2026-32147
- https://cna.erlef.org/cves/CVE-2026-32147.html
- https://github.com/erlang/otp/commit/28c5d5a6c5f873dc701b597276271763e7d1c004
- https://github.com/erlang/otp/security/advisories/GHSA-28jg-mw9x-hpm5
- https://osv.dev/vulnerability/EEF-CVE-2026-32147
- https://www.erlang.org/doc/system/versions.html#order-of-versions