CVE-2026-56270

Flowise versions prior to 3.1.0 (specifically 3.0.13 and earlier) are vulnerable to a missing authentication flaw in the /api/v1/loginmethod endpoint. This allows unauthenticated remote attackers to retrieve an organization's complete SSO configuration , including OAuth client secrets in cleartex...

CVE-2026-56270: Missing Authentication for Critical Function

Flowise before 3.1.0 versions 3.0.13 and earlier contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an...

Mattermost has an Observable Timing Discrepancy vulnerability

Mattermost versions 10.5.x = 10.5.10, 10.11.x = 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets...

CVE-2025-54499

Mattermost versions 10.5.x = 10.5.10, 10.11.x = 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets...

CVE-2025-54499: Observable Timing Discrepancy

Mattermost versions 10.5.x = 10.5.10, 10.11.x = 10.11.2 fail to use constant-time comparison for sensitive string comparisons which allows attackers to exploit timing oracles to perform byte-by-byte brute force attacks via response time analysis on Cloud API keys and OAuth client secrets...

PT-2025-42444

Name of the Vulnerable Software and Affected Versions Mattermost versions 10.5.x through 10.5.10 Mattermost versions 10.11.x through 10.11.2 Description The software does not employ constant-time comparison for sensitive string comparisons, creating a timing oracle. This allows attackers to explo...

SUSE CVE-2023-39958

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, missing protection allows an attacker to brute force the client secrets of configured OAuth2 clients...