PT-2026-56998 · Discourse · Discourse

Publicado 2026-07-09 · Atualizado 2026-07-09 · CVE-2026-53961

Mitre

CVSS v3.1

6.5

Média

Vetor base

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

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, the AWS SES bounce webhook at POST /webhooks/aws verified that SNS messages were signed by Amazon but did not bind them to trusted TopicArn values, allowing any AWS account holder to publish validly signed forged Bounce notifications that revoke a targeted user email. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

Correção

Insufficient Verification of Data Authenticity

Enumeração de Fraquezas

CWE-345

Identificadores relacionados

CVE-2026-53961

Produtos afetados

Discourse

Referências · 10

• https://github.com/discourse/discourse/releases/tag/v2026.6.0 · Nota
• https://github.com/discourse/discourse/commit/958f0cd831d65a49ec75f05343ca2c167679f0ea · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.5.1 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-53961 · Nota de Segurança
• https://github.com/discourse/discourse/security/advisories/GHSA-8f9m-v436-wr3x · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.1.5 · Nota
• https://github.com/discourse/discourse/commit/aea35190791261bab258ebab05da279e78cdd0e6 · Nota
• https://github.com/discourse/discourse/commit/3a3d315a85ef3c6aabfc7e7bb38702059784f06b · Nota
• https://github.com/discourse/discourse/commit/61f12e13aa1b760f81d5ff60f12e3a7e77434b94 · Nota
• https://github.com/discourse/discourse/releases/tag/v2026.4.2 · Nota