AZL-90129
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-90129.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-90129
- Upstream
- Published
- 2026-06-10T16:17:09Z
- Modified
- 2026-08-30T05:26:50Z
- Summary
- CVE-2026-48855 affecting package erlang for versions less than 26.2.5.21-2
- Details
-
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Erlang OTP ssh (ssh_sftpd module) allows File Discovery.
The SSHFXPREADLINK handler in sshsftpd sends the raw result of file:readlink/2 to the client without calling chrootfilename/2 to strip the backend root prefix. An authenticated SFTP client can create a symlink inside the chroot pointing to /; sshsftpd resolves the target to the absolute backend root and stores it on disk. Reading the symlink back via SSHFXPREADLINK 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 OTP 29.0.2, OTP 28.5.0.2 and OTP 27.3.4.13, corresponding to ssh from 3.0.1 before 6.0.1, 5.5.2.1 and 5.2.11.8.
- References