Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD (CVE-2026-53960)
Discourse versions prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0 leak hidden or unviewable first-post content in the publicly accessible Q&A schema JSON-LD data. This exposure allows unauthenticated visitors and search engine crawlers to access content intended to be hidden. The issue has been fixed in the specified versions.
AI Analysis
Technical Summary
Discourse, an open-source discussion platform, had a vulnerability (CVE-2026-53960) where hidden or otherwise unviewable first-post content was included as an excerpt in the Q&A (QAPage) JSON-LD structured data served publicly. This caused unintended data leakage to unauthenticated users and search engine crawlers. The vulnerability affects versions prior to 2026.1.6, versions from 2026.5.0 up to but not including 2026.5.2, and versions from 2026.6.0 up to but not including 2026.6.1. The issue is resolved in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
Potential Impact
The vulnerability results in the exposure of hidden or restricted first-post content to any unauthenticated visitor and search engine crawlers via the publicly served Q&A JSON-LD structured data. This could lead to unintended disclosure of sensitive or private discussion content.
Mitigation Recommendations
A patch is available and the issue is fixed in Discourse versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0. Users should upgrade to one of these versions to remediate the vulnerability.
Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD (CVE-2026-53960)
Description
Discourse versions prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0 leak hidden or unviewable first-post content in the publicly accessible Q&A schema JSON-LD data. This exposure allows unauthenticated visitors and search engine crawlers to access content intended to be hidden. The issue has been fixed in the specified versions.
Affected software
pkg:bitnami/discourseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Discourse, an open-source discussion platform, had a vulnerability (CVE-2026-53960) where hidden or otherwise unviewable first-post content was included as an excerpt in the Q&A (QAPage) JSON-LD structured data served publicly. This caused unintended data leakage to unauthenticated users and search engine crawlers. The vulnerability affects versions prior to 2026.1.6, versions from 2026.5.0 up to but not including 2026.5.2, and versions from 2026.6.0 up to but not including 2026.6.1. The issue is resolved in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
Potential Impact
The vulnerability results in the exposure of hidden or restricted first-post content to any unauthenticated visitor and search engine crawlers via the publicly served Q&A JSON-LD structured data. This could lead to unintended disclosure of sensitive or private discussion content.
Mitigation Recommendations
A patch is available and the issue is fixed in Discourse versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0. Users should upgrade to one of these versions to remediate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-discourse-2026-53960
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-53960"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- Medium
- Cvss Version
- null
Threat ID: 6a885f20acd9273b493f7d15
Added to database: 08/21/2026, 14:22:24 UTC
Last enriched: 08/21/2026, 14:30:37 UTC
Last updated: 08/21/2026, 22:52:13 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.