CVE-2026-48855
published 2026-06-10CVE-2026-48855: Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery. The SSH_FXP_READLINK…
PriorityP341medium6.5CVSS 3.1
AVNACLPRLUINSUCHINAN
EPSS
0.28%
19.4th percentile
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.
Affected
10 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | erlang | — | — |
| erlang | erlang_otp | >= 17.0 < 27.3.4.13 | 27.3.4.13 |
| erlang | erlang_otp | >= 28.0 < 28.5.0.2 | 28.5.0.2 |
| erlang | erlang_otp | >= 29.0 < 29.0.2 | 29.0.2 |
| erlang | erlang_ssh | >= 3.0.1 < 5.2.11.8 | 5.2.11.8 |
| erlang | erlang_ssh | >= 5.5 < 5.5.2.1 | 5.5.2.1 |
| erlang | erlang_ssh | >= 6.0 < 6.0.1 | 6.0.1 |
| erlang | otp | >= 08225797f7ef943d0c82a1d9dd6650d94ca2580d < 8f4224a0d2676b0653d2c71a889a956e8c2c62d6 | 8f4224a0d2676b0653d2c71a889a956e8c2c62d6 |
| erlang | otp | >= 17.0 < * | * |
| erlang | otp | >= 3.0.1 < * | * |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv4.02.3LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat2.3LOW
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VulDB
Erlang OTP ssh_sftpd.erl information disclosure (GHSA-pv7g-pjrq-x2fh)
vuldb·2026-06-10·CVSS 2.3
CVE-2026-48855 [LOW] Erlang OTP ssh_sftpd.erl information disclosure (GHSA-pv7g-pjrq-x2fh)
A vulnerability classified as problematic has been found in Erlang OTP. The impacted element is an unknown function in the library lib/ssh/src/ssh_sftpd.erl. This manipulation causes information disclosure.
This vulnerability is handled as CVE-2026-48855. The attack can be initiated remotely. There is not any exploit available.
It is recommended to upgrade the affected component.
Red Hat
erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
vendor_redhat·2026-06-10·CVSS 2.3
CVE-2026-48855 [LOW] CWE-59 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
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 f
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [epel-all]
bugzilla·2026-06-12·CVSS 2.3
CVE-2026-48855 [LOW] CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [epel-all]
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [fedora-all]
bugzilla·2026-06-12·CVSS 2.3
CVE-2026-48855 [LOW] CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [fedora-all]
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
bugzilla·2026-06-10·CVSS 2.3
CVE-2026-48855 [LOW] CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
CVE-2026-48855 erlang: Erlang OTP ssh: Information disclosure via symlink resolution in SFTP
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 target
https://cna.erlef.org/cves/CVE-2026-48855.htmlhttps://github.com/erlang/otp/commit/8f4224a0d2676b0653d2c71a889a956e8c2c62d6https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fhhttps://osv.dev/vulnerability/EEF-CVE-2026-48855https://www.erlang.org/doc/system/versions.html#order-of-versions
2026-06-10
Published