CVE-2026-48855

LOW EPSS 19.4%
Published Jun 10, 20262w ago · Modified Jun 17, 20261w ago
2.3 CVSS 4.0
Low
Find Similar
Published Jun 10, 2026 2w ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
2.3
Exploitability
—
Impact
—
Vector string
CVSS: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
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
19.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 6

VendorProductVersionRange
erlangerlang\/otp*≥17.0  –  <27.3.4.13
erlangerlang\/otp*≥28.0  –  <28.5.0.2
erlangerlang\/otp*≥29.0  –  <29.0.2
erlangerlang\/ssh*≥3.0.1  –  <5.2.11.8
erlangerlang\/ssh*≥5.5  –  <5.5.2.1
erlangerlang\/ssh*≥6.0  –  <6.0.1

References 5

  • cna.erlef.org https://cna.erlef.org/cves/CVE-2026-48855.html
    MitigationThird Party Advisory
  • github.com https://github.com/erlang/otp/commit/8f4224a0d2676b0653d2c71a889a956e8c2c62d6
    Patch
  • github.com https://github.com/erlang/otp/security/advisories/GHSA-pv7g-pjrq-x2fh
    MitigationVendor Advisory
  • osv.dev https://osv.dev/vulnerability/EEF-CVE-2026-48855
    MitigationThird Party Advisory
  • erlang.org https://www.erlang.org/doc/system/versions.html#order-of-versions
    Product

Remediation

  • github.com https://github.com/erlang/otp/commit/8f4224a0d2676b0653d2c71a889a956e8c2c62d6
    Patch