Usermin 2.100 - Username Enumeration

Usermin version 2.100 and below is susceptible to username enumeration via the password change functionality. An attacker can determine valid usernames by analyzing the response messages from the password change endpoint. id: CVE-2024-44762 info: name: Usermin 2.100 - Username Enumeration author:...

Pritunl VPN Server 1.29.2145.25 - Username Enumeration

Pritunl 1.29.2145.25 contains a username enumeration issue caused by different error responses in /auth/session login attempts, letting attackers verify valid usernames, exploit requires network access to the login endpoint. id: CVE-2020-25200 info: name: Pritunl VPN Server 1.29.2145.25 - Usernam...

AnythingLLM - Username Enumeration via Password Recovery

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to commit e287fab56089cf8fcea9ba579a3ecdeca0daa313, the password recovery endpoint returns different error messages depending on whether a username exists, so enabling...

Zoho ManageEngine ADSelfService Plus 6121 - Username Enumeration

Zoho ManageEngine ADSelfService Plus 6121 is vulnerable to username enumeration CVE-2022-28987. The Forgot Password functionality responds differently for existing and non-existing users, allowing attackers to enumerate valid usernames. id: CVE-2022-28987 info: name: Zoho ManageEngine ADSelfServi...

CVE-2026-48011 Shopware: Timing-attack on admin panel allowing enumeration of administrator usernames

Shopware is an open commerce platform. Prior to versions 6.6.10.18 and 6.7.10.1, an attacker is able to enumerate the usernames of administrator users by performing a timing attack. Versions 6.6.10.18 and 6.7.10.1 fix the issue...

CVE-2026-48859

Observable Timing Discrepancy vulnerability in Erlang/OTP ssh sshauth, sshoptions modules allows unauthenticated remote username enumeration via timing side-channel in password authentication. When the SSH daemon is configured with the userpasswords or password option, sshauth:checkpassword/3...

EUVD-2026-36054

Observable Timing Discrepancy vulnerability in Erlang/OTP ssh sshauth, sshoptions modules allows unauthenticated remote username enumeration via timing side-channel in password authentication. When the SSH daemon is configured with the userpasswords or password option, sshauth:checkpassword/3...

EEF-CVE-2026-48859 SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration

Summary 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 the user\passwords or password option,...

CVE-2026-48859

The CVE affects Erlang/OTP’s SSH server (ssh_auth and ssh_options) in OTP prior to 29.0.2 (SSH 6.0.x before 6.0.1). When the daemon uses user_passwords or password options, ssh_auth:check_password/3 performs PBKDF2-SHA256 with 600,000 iterations (~300 ms) for valid usernames, but returns in ~0 ms...

CVE-2026-48859 SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration

Observable Timing Discrepancy vulnerability in Erlang/OTP ssh sshauth, sshoptions modules allows unauthenticated remote username enumeration via timing side-channel in password authentication. When the SSH daemon is configured with the userpasswords or password option, sshauth:checkpassword/3...

CVE-2026-48859 SSH server timing side-channel in ssh_auth:check_password/3 allows unauthenticated username enumeration

Observable Timing Discrepancy vulnerability in Erlang/OTP ssh sshauth, sshoptions modules allows unauthenticated remote username enumeration via timing side-channel in password authentication. When the SSH daemon is configured with the userpasswords or password option, sshauth:checkpassword/3...

PT-2026-48466

Summary 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 the user passwords or password option, ssh auth:check...

Erlang/OTP -- timing-based username enumeration in SSH password authentication

https://github.com/erlang/otp/security/advisories/GHSA-3w6p-vwhf-wvp4 reports: A timing-based username enumeration vulnerability during password authentication with the userpasswords option has been fixed by performing a dummy PBKDF2 computation for invalid usernames, so authentication timing no...

CVE-2025-66954

A vulnerability exists in the Buffalo Link Station version 1.85-0.01 that allows unauthenticated or guest-level users to enumerate valid usernames and their associated privilege roles. The issue is triggered by modifying a parameter within requests sent to the /nasapi endpoint...

CVE-2026-33877

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain a timing side-channel vulnerability in the password reset endpoint /api/v1/@apostrophecms/login/reset-request that allows unauthenticated username and email enumeration. When a user is not found,...

CVE-2026-40263

Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the login endpoint performs bcrypt password verification only when the supplied username exists, returning immediately for nonexistent usernames. This timing discrepancy allows unauthenticated attackers to enumerat...

CVE-2026-20195

A vulnerability in an identity management API endpoint of Cisco ISE could allow an unauthenticated, remote attacker to enumerate valid user accounts on an affected device. This vulnerability exists because error messages are observed when the affected API endpoint is called. An attacker could...

CVE-2026-39321

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.8.0-alpha.6 and 8.6.74, he login endpoint response time differs measurably depending on whether the submitted username or email exists in the database. When a user is not found, the...

CVE-2026-44671

ZITADEL is an open source identity management platform. From 2.71.11 to before 3.4.10 and 4.15.0, a vulnerability was discovered in Zitadel's LDAP identity provider implementation, which fails to properly escape user-provided usernames before incorporating them into LDAP search filters. This allo...

CVE-2026-35676

phpMyFAQ before 4.1.3 contains an unauthenticated password reset vulnerability in the user password update API endpoint that allows attackers to change account passwords without token validation. Attackers can enumerate valid username and email pairs and force immediate password changes by sendin...