CVE-2026-27934 | THREATINT

Description

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

PUBLISHED Reserved 2026-02-25 | Published 2026-03-19 | Updated 2026-03-20 | Assigner GitHub_M

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-201: Insertion of Sensitive Information Into Sent Data

Product status

>= 2026.1.0-latest, < 2026.1.2

affected

>= 2026.2.0-latest, < 2026.2.1

affected

= 2026.3.0-latest

affected

References

github.com/...course/security/advisories/GHSA-824f-66wh-xx3g

cve.org (CVE-2026-27934)

nvd.nist.gov (CVE-2026-27934)

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