What is the CVSS score of CVE-2026-24742?

CVE-2026-24742 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Discourse are affected by CVE-2026-24742?

Organizations using versions should be aware of notable risk from CVE-2026-24742, a incorrect authorization vulnerability rated CVSS 6.5. Attackers could gain access beyond their authorized level.

How to fix or mitigate CVE-2026-24742?

Within 30 days: Identify affected systems running versions and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Discourse CVE-2026-24742

MEDIUM

Incorrect Authorization (CWE-863)

2026-01-28 security-advisories@github.com

Authentication Bypass Discourse

6.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Jan 28, 2026 - 21:16 nvd

MEDIUM 6.5

DescriptionGitHub Advisory

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, non-admin moderators can view sensitive information in staff action logs that should be restricted to administrators only. The exposed information includes webhook payload URLs and secrets, API key details, site setting changes, private message content, restricted category names and structures, and private chat channel titles. This allows moderators to bypass intended access controls and extract confidential data by monitoring the staff action logs. With leaked webhook secrets, an attacker could potentially spoof webhook events to integrated services. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. As a workaround, site administrators should review and limit moderator appointments to fully trusted users. There is no configuration-based workaround to prevent this access.

AnalysisAI

Discourse versions before 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 allow non-admin moderators to access restricted staff action logs containing sensitive data such as webhook secrets, API keys, private messages, and restricted category information. An attacker with moderator privileges could extract confidential information and use leaked webhook credentials to spoof events to integrated services. No patch is currently available for this access control bypass.

Technical ContextAI

Classified as CWE-863 (Incorrect Authorization). Affects Discourse. Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, non-admin moderators can view sensitive information in staff action logs that should be restricted to administrators only. The exposed information includes webhook payload URLs and secrets, API key details, site setting changes, private message content, restricted category names and structures, and private chat channel titles. This allows moderators to bypass intended access controls