Security Vulnerabilities
Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, a hostname validation issue in FinalDestination could allow bypassing SSRF protections under certain conditions. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.
CVSS Score
7.6
EPSS Score
0.0
Published
2026-01-28
During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.
CVSS Score
5.3
EPSS Score
0.0
Published
2026-01-28
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Tagify allows Cross-Site Scripting (XSS).This issue affects Tagify: from 0.0.0 before 1.2.44.
CVSS Score
5.4
EPSS Score
0.0
Published
2026-01-28
A segmentation violation in the flow.column_stack component of OneFlow v0.9.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
CVSS Score
6.5
EPSS Score
0.0
Published
2026-01-28
Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, some subscription endpoints lack proper checking for ownership before making changes. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.
CVSS Score
7.1
EPSS Score
0.0
Published
2026-01-28
Discourse is an open source discussion platform. Versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 have an application level denial of service vulnerabilityin the username change functionality at try.discourse.org. The vulnerability allows attackers to cause noticeable server delays and resource exhaustion by sending large JSON payloads to the username preference endpoint PUT /u//preferences/username, resulting in degraded performance for other users and endpoints. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.
CVSS Score
4.3
EPSS Score
0.0
Published
2026-01-28
Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint lets any authenticated user bypass the ai_discover_persona access controls and gain ongoing DM access to personas that may be wired to staff-only categories, RAG document sets, or automated tooling, enabling unauthorized data disclosure. Because the controller also accepts arbitrary user_id, an attacker can impersonate other accounts to trigger unwanted AI conversations on their behalf, generating confusing or abusive PM traffic. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. No known workarounds are available.
CVSS Score
5.4
EPSS Score
0.0
Published
2026-01-28
Discourse is an open source discussion platform. A vulnerability present in versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 affects anyone who uses S3 for uploads. While scripts may be executed, they will only be run in the context of the S3/CDN domain, with no site credentials. Versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0 fix the issue. As a workaround, disallow html or xml files for uploads in authorized_extensions. For existing html xml uploads, site owners can consider deleting them.
CVSS Score
4.6
EPSS Score
0.0
Published
2026-01-28
A GPU device-ID validation flaw in the flow.cuda.get_device_capability() component of OneFlow v0.9.0 allows attackers to cause a Denial of Service (DoS) via a crafted device ID.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-28
An issue in the flow.cuda.BoolTensor component of OneFlow v0.9.0 allows attackers to cause a Denial of Service (DoS) via a crafted input.
CVSS Score
7.5
EPSS Score
0.0
Published
2026-01-28