PT-2026-30241 · Discourse · Discourse

Davidtaylorhq · CVE-2026-27481 · Published 2026-04-03 · Updated 2026-07-24

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Discourse versions 2026.1.0 through before 2026.1.3 Discourse versions 2026.2.0 through before 2026.2.2 Discourse versions 2026.3.0 through before 2026.3.0

Description Discourse, an open-source discussion platform, contains an authorization bypass issue. This allows unauthenticated or unauthorized users to view hidden (staff-only) tags and associated data. All Discourse instances with tagging enabled and staff-only tag groups configured are affected.

Recommendations Upgrade to Discourse version 2026.1.3 or later. Upgrade to Discourse version 2026.2.2 or later. Upgrade to Discourse version 2026.3.0 or later.

Exploit

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

BIT-DISCOURSE-2026-27481

CVE-2026-27481

GHSA-6C9X-3VRP-682X

Affected Products

Discourse

References · 6

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27481.json · Exploit
• https://osv.dev/vulnerability/BIT-discourse-2026-27481 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-27481 · Security Note
• https://osv.dev/vulnerability/CVE-2026-27481 · Vendor Advisory
• https://github.com/discourse/discourse/security/advisories/GHSA-6c9x-3vrp-682x · Note
• https://t.me/cveNotify/222508 · Telegram Post