CVE-2026-53960
Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, hidden or otherwise unviewable first-post content was leaked as an excerpt in the publicly-served Q&A (QAPage) JSON-LD structured data, exposing it to any unauthenticated visitor and to search-engine crawlers. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
| CWE | CWE-862 |
| Vendor | discourse |
| Product | discourse |
| Published | Aug 17, 2026 |
| Last Updated | Aug 17, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
discourse / discourse
< 2026.1.6 >= 2026.5.0-latest, < 2026.5.2 >= 2026.6.0-latest, < 2026.6.1