Discourse < 3.4.7 Improper Authentication Vulnerability

Discourse is prone to an improper authentication vulnerability. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

CVE-2025-53102

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

BIT-DISCOURSE-2025-53102 Discourse's WebAuthn challenge isn't cleared from user session after authentication

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

CVE-2025-53102

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

CVE-2025-53102 Discourse's WebAuthn challenge isn't cleared from user session after authentication

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

CVE-2025-53102 Discourse's WebAuthn challenge isn't cleared from user session after authentication

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

CVE-2025-53102 Discourse's WebAuthn challenge isn't cleared from user session after authentication

Discourse is an open-source community discussion platform. Prior to version 3.4.7 on the stable branch and version 3.5.0.beta.8 on the tests-passed branch, upon issuing a physical security key for 2FA, the server generates a WebAuthn challenge, which the client signs. The challenge is not cleared...

CVE-2025-53102

CVE-2025-53102 affects Discourse: prior to 3.4.7 (stable) and 3.5.0.beta.8 (tests-passed), issuing a physical security key for 2FA generates a WebAuthn challenge that is not cleared from the user session after authentication, potentially allowing reuse and increasing security risk. Affected versi...

Discourse 授权问题漏洞

Discourse is an open source community discussion platform from Discourse Open Source. The platform includes features such as communities, email, and chat rooms. An authorization issue vulnerability exists in Discourse versions prior to 3.4.7 and prior to 3.5.0.beta.8, which stems from an uncleare...

PT-2025-31259 · Discourse · Discourse

Name of the Vulnerable Software and Affected Versions: Discourse versions prior to 3.4.7 on the stable branch Discourse versions prior to 3.5.0.beta.8 on the tests-passed branch Description: Discourse is an open-source community discussion platform. Upon issuing a physical security key for...

📄 Discourse 3.1.1 Unauthenticated Chat Message Access

Proof of concept exploit for Discourse version 3.1.1 that provides unauthenticated chat message access. !/usr/bin/env ruby Title : Discourse 3.1.1 - Unauthenticated Chat Message Access CVE-2023-45131 CVSS: 7.5 High Affected: Discourse 3.1.1 stable, 3.2.0.beta2 Author ibrahimsql @...

Discourse 3.1.1 - Unauthenticated Chat Message Access

!/usr/bin/env ruby Title : Discourse 3.1.1 - Unauthenticated Chat Message Access CVE-2023-45131 CVSS: 7.5 High Affected: Discourse 3.1.1 stable, 3.2.0.beta2 Author ibrahimsql @ https://twitter.com/ibrahmsql Date: 2023-12-14 require 'net/http' require 'uri' require 'json' require 'openssl' require...

📄 Discourse 3.2.x Anonymous Cache Poisoning

Discourse versions 3.1.x and 3.2.x suffer from an anonymous cache poisoning vulnerability. !/usr/bin/env python3 """ Exploit Title: Discourse 3.2.x - Anonymous Cache Poisoning Date: 2024-10-15 Exploit Author: ibrahimsql Github: : https://github.com/ibrahmsql Vendor Homepage: https://discourse.org...

Discourse 3.2.x - Anonymous Cache Poisoning

!/usr/bin/env python3 """ Exploit Title: Discourse 3.2.x - Anonymous Cache Poisoning Date: 2024-10-15 Exploit Author: ibrahimsql Github: : https://github.com/ibrahmsql Vendor Homepage: https://discourse.org Software Link: https://github.com/discourse/discourse Version: Discourse latest patched...

BIT-DISCOURSE-2025-48954 Discourse vulnerable to XSS via user-provided query parameter in oauth failure flow

Discourse is an open-source discussion platform. Versions prior to 3.5.0 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0 patches the issue. As a workaround, have the content security policy enabled...

BIT-DISCOURSE-2025-49845 Discourse users are able to see their own whispers even after being removed from a group that has been configured to see whispers

Discourse is an open-source discussion platform. The visibility of posts typed whisper is controlled via the whispersallowedgroups site setting. Only users that belong to groups specified in the site setting are allowed to view posts typed whisper. However, it has been discovered that users of...

CVE-2025-49845

Discourse is an open-source discussion platform. The visibility of posts typed whisper is controlled via the whispersallowedgroups site setting. Only users that belong to groups specified in the site setting are allowed to view posts typed whisper. However, it has been discovered that users of...

CVE-2025-48954

Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled...

Discourse < 3.4.6 Information Disclosure Vulnerability

Discourse is prone to an information disclosure vulnerability. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

Discourse 3.5.x < 3.5.0.beta8 Multiple Vulnerabilities

Discourse is prone to multiple vulnerabilities. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:discourse:discourse"; ifdescripti...