PT-2026-22196 · Discourse · Discourse

Davidtaylorhq · CVE-2026-28219 · Publicado 2026-02-26 · Atualizado 2026-03-03

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Média

Vetor base

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2025.12.2 Discourse versions prior to 2026.1.1 Discourse versions prior to 2026.2.0

Description An improper authorization check in the topic management logic allows authenticated users to modify privileged attributes of their topics. A regular user can elevate a topic’s status to a site-wide notice or banner by manipulating specific parameters in a PUT or POST request, bypassing intended administrative restrictions. This bypass occurs due to insufficient validation when processing requests related to topic attributes.

Recommendations Update Discourse to version 2025.12.2 or later. Update Discourse to version 2026.1.1 or later. Update Discourse to version 2026.2.0 or later.

Exploit

Correção

Enumeração de Fraquezas

CWE-915

Identificadores relacionados

BIT-DISCOURSE-2026-28219

CVE-2026-28219

GHSA-8V26-9F7H-JC8X

Produtos afetados

Discourse

Referências · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28219.json · Exploit
• https://github.com/discourse/discourse/security/advisories/GHSA-8v26-9f7h-jc8x · Aviso do Fabricante
• https://twitter.com/CVEnew/status/2027466653089562750 · Publicação no Twitter
• https://osv.dev/vulnerability/CVE-2026-28219 · Aviso do Fabricante
• https://osv.dev/vulnerability/BIT-discourse-2026-28219 · Aviso do Fabricante
• https://twitter.com/VulmonFeeds/status/2027234090437550410 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-28219 · Nota de Segurança