CVE-2025-12455 Username Enumeration Observable Response Discrepancy vulnerability has been discovered in OpenText™ Vertica.

Observable response discrepancy vulnerability in OpenText™ Vertica allows Password Brute Forcing. The vulnerability could lead to Password Brute Forcing in Vertica management console application.This issue affects Vertica: from 10.0 through 10.X, from 11.0 through 11.X, from 12.0 through 12.X...

BIT-PARSE-2026-31901 Parse Server has user enumeration via email verification endpoint

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 8.6.34 and 9.6.0, the email verification endpoint /verificationEmailRequest returns distinct error responses depending on whether an email address belongs to an existing user, is alrea...

BIT-PARSE-2026-31872 Parse Server has a protected fields bypass via dot-notation in query and sort

Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0 and 8.6.32, the protectedFields class-level permission CLP can be bypassed using dot-notation in query WHERE clauses and sort parameters. An attacker can use dot-notation to quer...

CVE-2026-2859 Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deployagent endpoint, which could lead to information disclosure...

CVE-2026-2859 Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deployagent endpoint, which could lead to information disclosure...

CVE-2026-2859

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deployagent endpoint, which could lead to information disclosure...

CVE-2026-2859

The CVE affects Checkmk deployments, specifically versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 (EOL). A vulnerability in the deploy_agent endpoint arises from improper permission enforcement, allowing unauthenticated users to observe different HTTP response codes and enumerate...

CVE-2026-2859 Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deployagent endpoint, which could lead to information disclosure...

CVE-2026-24097

The CVE affects Checkmk: vulnerable in 2.4.0 prior to 2.4.0p23 and 2.3.0 prior to 2.3.0p43 (2.2.0 is EOL). The issue is improper permission enforcement in the agent-receiver/register_existing endpoint, enabling authenticated users to enumerate existing hosts by observing differences in HTTP respo...

CVE-2026-24097 Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/registerexisting endpoint, which could lead to information disclosure...

CVE-2026-24097 Authenticated Host Enumeration via Observable Response Discrepancy on Agent Register Existing Endpoint

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/registerexisting endpoint, which could lead to information disclosure...

CVE-2026-24097

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/registerexisting endpoint, which could lead to information disclosure...

Information Disclosure

Directus is vulnerable to information disclosure. The vulnerability is due to different error messages returned by the /items/collection API when accessing unauthorized existing collections versus non-existent collections, which allows an attacker to enumerate and discover the existence of...

PT-2026-25370

CVE-2025-13460 IBM Aspera Console 3.3.0 through 3.4.8 could allow an attacker to enumerate usernames due to an observable response discrepancy. https://t.co/sTiAd3lLOs...

Checkmk security vulnerabilities

Checkmk is an IT monitoring platform developed by Checkmk Corporation. Versions of Checkmk prior to 2.4.0p23, 2.3.0p43, and 2.2.0 contain security vulnerabilities. These vulnerabilities stem from improper permission execution, allowing unauthorized users to enumerate existing hosts by observing...

CVE-2026-2859: Observable Response Discrepancy

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deployagent endpoint, which could lead to information disclosure...

PT-2026-25386

Cleanuparr is a tool for automating the cleanup of unwanted or blocked files in Sonarr, Radarr, and supported download clients like qBittorrent. From 2.7.0 to 2.8.0, the /api/auth/login endpoint contains a logic flaw that allows unauthenticated remote attackers to enumerate valid usernames by...

CVE-2026-24097: Observable Response Discrepancy

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/registerexisting endpoint, which could lead to information disclosure...

PT-2026-25169

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows unauthenticated users to enumerate existing hosts by observing different HTTP response codes in deploy agent endpoint, which could lead to information disclosure...

PT-2026-25168

Improper permission enforcement in Checkmk versions 2.4.0 before 2.4.0p23, 2.3.0 before 2.3.0p43, and 2.2.0 EOL allows authenticated users to enumerate existing hosts by observing different HTTP response codes in agent-receiver/register existing endpoint, which could lead to information disclosur...