CVE-2026-48859

🗓️ 10 Jun 2026 14:35:43Reported by EEFType

cve🔗 web.nvd.nist.gov👁 53 Views🌐 WEB

CVE-2026-48859: timing side-channel leaks username validity enabling unauthenticated enumeration.

Reporter	Title	Published	Views	Family All 15
ATTACKERKB	CVE-2026-48859	10 Jun 202614:35	–	attackerkb
CNNVD	Erlang/OTP 安全漏洞	10 Jun 202600:00	–	cnnvd
Cvelist	CVE-2026-48859 SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration	10 Jun 202614:35	–	cvelist
FreeBSD	Erlang/OTP -- timing-based username enumeration in SSH password authentication	10 Jun 202600:00	–	freebsd
Debian CVE	CVE-2026-48859	10 Jun 202614:35	–	debiancve
EUVD	EUVD-2026-36054	10 Jun 202614:35	–	euvd
Tenable Nessus	FreeBSD : Erlang/OTP -- timing-based username enumeration in SSH password authentication (d87e7df5-64d4-11f1-ab11-4c526214c986)	11 Jun 202600:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-48859	12 Jun 202600:00	–	nessus
NVD	CVE-2026-48859	10 Jun 202616:17	–	nvd
OSV	CVE-2026-48859 SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration	10 Jun 202614:35	–	osv

NVD

CNA

Node

erlang erlang/otpRange29.0–29.0.2

erlang erlang/sshRange6.0–6.0.1

[
  {
    "cpes": [
      "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "ssh_auth",
      "ssh_options"
    ],
    "packageName": "otp",
    "packageURL": "pkg:sid/erlang.org/otp",
    "product": "OTP",
    "programFiles": [
      "lib/ssh/src/ssh_auth.erl",
      "lib/ssh/src/ssh_options.erl"
    ],
    "programRoutines": [
      {
        "name": "ssh_auth:check_password/3"
      },
      {
        "name": "ssh_options:get_password_option/2"
      }
    ],
    "vendor": "Erlang",
    "versions": [
      {
        "lessThan": "29.0.2",
        "status": "affected",
        "version": "29.0",
        "versionType": "otp"
      }
    ]
  },
  {
    "cpes": [
      "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "ssh_auth",
      "ssh_options"
    ],
    "packageName": "ssh",
    "packageURL": "pkg:otp/ssh?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
    "product": "OTP",
    "programFiles": [
      "src/ssh_auth.erl",
      "src/ssh_options.erl"
    ],
    "programRoutines": [
      {
        "name": "ssh_auth:check_password/3"
      },
      {
        "name": "ssh_options:get_password_option/2"
      }
    ],
    "repo": "https://github.com/erlang/otp",
    "vendor": "Erlang",
    "versions": [
      {
        "lessThan": "6.0.1",
        "status": "affected",
        "version": "6.0",
        "versionType": "otp"
      }
    ]
  },
  {
    "collectionURL": "https://github.com",
    "cpes": [
      "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "ssh_auth",
      "ssh_options"
    ],
    "packageName": "erlang/otp",
    "packageURL": "pkg:github/erlang/otp",
    "product": "OTP",
    "programFiles": [
      "lib/ssh/src/ssh_auth.erl",
      "lib/ssh/src/ssh_options.erl"
    ],
    "programRoutines": [
      {
        "name": "ssh_auth:check_password/3"
      },
      {
        "name": "ssh_options:get_password_option/2"
      }
    ],
    "repo": "https://github.com/erlang/otp",
    "vendor": "Erlang",
    "versions": [
      {
        "lessThan": "c342092ef4b369bb409d5b71ac8fd83bab74aedf",
        "status": "affected",
        "version": "032d1bc9491a3975c68faf9bc7776115d6ae3005",
        "versionType": "git"
      }
    ]
  }
]

Source	Link
github	www.github.com/erlang/otp/security/advisories/GHSA-3w6p-vwhf-wvp4
erlang	www.erlang.org/doc/system/versions.html
osv	www.osv.dev/vulnerability/EEF-CVE-2026-48859
github	www.github.com/erlang/otp/commit/c342092ef4b369bb409d5b71ac8fd83bab74aedf
cna	www.cna.erlef.org/cves/CVE-2026-48859.html

Parameter	Position	Path	Description	CWE
ssh_auth:check_password/3	path	lib/ssh/src/ssh_auth.erl	Timing side-channel in SSH password auth enabling username enumeration.	CWE-208
PBKDF2-SHA256 600000 iterations	path	lib/ssh/src/ssh_auth.erl	Timing side-channel in SSH password auth enabling username enumeration.	CWE-208
valid usernames timing	path	lib/ssh/src/ssh_auth.erl	Timing side-channel in SSH password auth enabling username enumeration.	CWE-208
ssh_options:get_password_option/2	path	lib/ssh/src/ssh_options.erl	Path handling of password option leads to different timing for valid/invalid usernames.	CWE-208
password option	path	lib/ssh/src/ssh_options.erl	Path handling of password option leads to different timing for valid/invalid usernames.	CWE-208
user_passwords option	path	lib/ssh/src/ssh_options.erl	Path handling of password option leads to different timing for valid/invalid usernames.	CWE-208

03 Aug 2026 20:17Current

5.5Medium risk

Vulners AI Score5.5

CVSS 3.15.3

CVSS 46.3

EPSS0.00354

SSVC

CWE-208