CVE-2026-59846

A flaw was found in libssh. A malicious username expanded through %r in ProxyCommand handling can inject shell metacharacters, exposing environment variables and causing unintended shell behavior. Mitigation Make sure you are not executing connections with untrusted username inputs...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' in the ProxyCommand process when a malicious username is expanded through %r, which can inject shell metacharacters, expose environment...

PT-2026-61936

Name of the Vulnerable Software and Affected Versions libssh affected versions not specified Description A flaw exists in the handling of ProxyCommand where a malicious username expanded through the %r variable can inject shell metacharacters. This can lead to the exposure of environment variable...

File Browser: Colliding username normalization gives two users the same home directory

Summary FileBrowser confines each user to a scope: a home directory that acts as the boundary for everything they can read or write. When self-registration and automatic home-directory creation are both enabled Signup=true and CreateUserDir=true, a new user's scope is built from their username...

GHSA-7RC3-G7H6-22M7 File Browser: Colliding username normalization gives two users the same home directory

Summary FileBrowser confines each user to a scope: a home directory that acts as the boundary for everything they can read or write. When self-registration and automatic home-directory creation are both enabled Signup=true and CreateUserDir=true, a new user's scope is built from their username...

EUVD-2026-44708

File Browser: Colliding username normalization gives two users the same home directory...

GHSA-G6XQ-892H-64W3 Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)

Summary When Composer is run with -vvv debug verbosity, it could print a credential that was embedded directly in a repository or package URL, but not as a password, to its debug output. Composer already masked the password portion of such URLs, but the username portion was shown in clear text...

Composer: URL-embedded HTTP-Basic username leaks to verbose logs (GitHub PAT exposure)

Summary When Composer is run with -vvv debug verbosity, it could print a credential that was embedded directly in a repository or package URL, but not as a password, to its debug output. Composer already masked the password portion of such URLs, but the username portion was shown in clear text...

CVE-2026-42218

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure...

CVE-2026-42218 XRDP is vulnerable to a server timing attack, leading to user enumeration

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure...

CVE-2026-42218

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure...

CVE-2026-42218

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure...

CVE-2026-42218

CVE-2026-42218 affects xrdp, an open source RDP server. The issue is a timing side‑channel in the login interface of versions 0.10.6 and earlier that allows remote observers to infer whether a username exists, enabling information disclosure via username enumeration. The vulnerability is explicit...

CVE-2026-54685 FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.3.2-beta, the /api/auth/login authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a 401/403 response almost immediately. When a valid username...

CVE-2026-54685

FileBrowser Quantum exposes a timing-side-channel in the /api/auth/login endpoint prior to version 1.3.2-beta, allowing unauthenticated users to distinguish valid usernames from invalid ones via response-time differences (bcrypt path for valid usernames). A PoC demonstrates the attack, and the is...

CVE-2026-54685 FileBrowser Quantum has Username Enumeration via Authentication Timing Side-Channel

FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to version 1.3.2-beta, the /api/auth/login authentication endpoint does not execute in constant time. When a non-existent username is supplied, the server returns a 401/403 response almost immediately. When a valid username...

gnutls: gnutls: Authentication Bypass via NUL Character in Username

A flaw was found in gnutls. Servers configured with RSA-PSK Rivest–Shamir–Adleman – Pre-Shared Key wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass...

CVE-2026-16076

A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chatsend of the file astrbot/dashboard/routes/openapi.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to...

EUVD-2026-45355

A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chatsend of the file astrbot/dashboard/routes/openapi.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to...

CVE-2026-16076

A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chatsend of the file astrbot/dashboard/routes/openapi.py of the component API. Such manipulation of the argument Username leads to authentication bypass by spoofing. It is possible to...