CVE-2026-59828
MEDIUM SEVERITYCVSS Score & Metrics
Base Score
5.3 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Vulnerability Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, post revisions that should be hidden from regular users could be leaked through visible diffs on adjacent revisions serialized by PostRevisionSerializer. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-200
Source
NVD
Vendor
discourse
Product
discourse
External References
- https://github.com/discourse/discourse/commit/1f26c1163ce87a2abbd1d01780ab1b5fb16e75f6
- https://github.com/discourse/discourse/commit/8b773332b0f937dfcd894ed56d56fc5a81578d9d
- https://github.com/discourse/discourse/commit/8d36da1b68c906592abde3f2e94d505cdf097435
- https://github.com/discourse/discourse/commit/d58988d46bb1019bfa8b8330ae81a1a134e08511
- https://github.com/discourse/discourse/releases/tag/v2026.1.5
- https://github.com/discourse/discourse/releases/tag/v2026.4.2
- https://github.com/discourse/discourse/releases/tag/v2026.5.1
- https://github.com/discourse/discourse/releases/tag/v2026.6.0
- https://github.com/discourse/discourse/security/advisories/GHSA-q456-4f8q-42vx
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