PT-2026-57001 · Discourse · Discourse

Publicado 2026-07-09 · Atualizado 2026-07-09 · CVE-2026-55424

Mitre

CVSS v4.0

7.4

Alta

Vetor base

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

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, a topic "featured link" was not sufficiently normalized and escaped before being rendered in the topic list, allowing a user who can set a featured link to inject JavaScript when default Content Security Policy protections were modified or disabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

Correção

XSS

Enumeração de Fraquezas

CWE-79

Identificadores relacionados

CVE-2026-55424

Produtos afetados

Discourse

Referências · 10

• https://github.com/discourse/discourse/releases/tag/v2026.6.0 · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.5.1 · Nota
• https://github.com/discourse/discourse/commit/c9b9405f5bd0bf0269e505e28e3aad388d7657c5 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-55424 · Nota de Segurança
• https://github.com/discourse/discourse/security/advisories/GHSA-695w-7fv8-mxg3 · Nota
• https://github.com/discourse/discourse/commit/6828aee9b15c2655d63b515ac919830bd540ff83 · Nota
• https://github.com/discourse/discourse/commit/1bce8881e4253d9bbab56f011a12ef899b926b59 · Nota
• https://github.com/discourse/discourse/commit/6679d9a5083488bae10c2adbb345c481c583242c · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.1.5 · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.4.2 · Nota