CVE-2026-53960CWE-862broken-access-control

CVE-2026-53960

Medium · published August 17, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
22.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00313 · 22.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-08-17T20:16Z
References (1)
https://github.com/discourse/discourse/security/advisories/GHSA-j5j7-w5g3-43q8 · [email protected]
EPSS history
Timeline
  • 17 AUG 15:33Z
    Discourse: Hidden first-post excerpt is emitted in Q&A schema JSON-LD
    cvelistv5