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CVE-2026-33411

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CVE-2026-33411

Published: Mar 20, 2026

Modified: Mar 24, 2026

PUBLISHED

CVSS v3.1

5.4

MEDIUM

Description

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a potential stored XSS in topic titles for the solved posts stream. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

VendorProductVersions

discourse

discourse

affected
>= 2026.1.0-latest, < 2026.1.2
affected
>= 2026.2.0-latest, < 2026.2.1
affected
= 2026.3.0-latest

Weaknesses (CWE)

CWE-79

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

References

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