CVE-2026-22892

Insufficient Authorization in Mattermost Jira Plugin Allows Unauthorized Access to Post Attachments

CVSS 4.3 MEDIUMEPSS 0.2%CWE-863

Vexday Risk Score

13Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 4.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Ciclo de vida

13 fev 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to via the /create-issue API endpoint by providing the post ID of an inaccessible post.. Mattermost Advisory ID: MMSA-2025-00550

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Produtos afetados

Mattermost · Mattermost

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Referências

https://mattermost.com/security-updates