What is CVE-2026-48859?

CVE-2026-48859 is a medium-severity vulnerability in Erlang Erlang\/otp, classified under CWE-208. CVSS score: 5.3/10. Published 2026-06-10.

How severe is CVE-2026-48859?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Erlang Erlang\/otp

CVE-2026-48859

Observable Timing Discrepancy vulnerability in Erlang/OTP ssh (ssh_auth, ssh_options modules) allows unauthenticated remote username enumeration via timing side-channel in password authentication. When the SSH daemon is configured with th…

EPSS: 0.004 (28.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Erlang Erlang\/otp
Erlang Erlang\/ssh
Erlang Otp — versions 6.0, 29.0, 032d1bc9491a3975c68faf9bc7776115d6ae3005

Weakness classification (CWE)

CWE-208

References

6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Third Party Advisory, Mitigation)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Patch, patch)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, vendor-advisory, Mitigation, Vendor Advisory)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, Third Party Advisory, Mitigation)
6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Product, x_version-scheme)

Frequently asked questions

What is CVE-2026-48859?: CVE-2026-48859 is a medium-severity vulnerability in Erlang Erlang\/otp, classified under CWE-208. CVSS score: 5.3/10. Published 2026-06-10.
How severe is CVE-2026-48859?: Medium severity. CVSS v3 base score is 5.3 out of 10.