PT-2026-57004 · Discourse · Discourse

CVE-2026-59828

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Published

2026-07-09

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Updated

2026-07-14

CVSS v3.1

5.3

Medium

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.6.0 Discourse versions prior to 2026.5.1 Discourse versions prior to 2026.4.2 Discourse versions prior to 2026.1.5
Description Post revisions intended to be hidden from regular users may be leaked through visible diffs on adjacent revisions. This occurs during serialization by the PostRevisionSerializer function.
Recommendations Update to version 2026.6.0 Update to version 2026.5.1 Update to version 2026.4.2 Update to version 2026.1.5

Exploit

Fix

Information Disclosure

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Weakness Enumeration

CWE-200

Related Identifiers

BIT-DISCOURSE-2026-59828
CVE-2026-59828
GHSA-Q456-4F8Q-42VX

Affected Products

Discourse