Nixpkgs security tracker

Untriaged

Permalink CVE-2026-6673

6.4 MEDIUM

CVSS version (CVSS): 3.1
Attack Vector (AV): Network (N)
Attack Complexity (AC): High (H)
Privileges Required (PR): Low (L)
User Interaction (UI): Required (R)
Scope (S): Unchanged (U)
Confidentiality (C): None (N)
Integrity (I): High (H)
Availability (A): High (H)
Modified Attack Vector (MAV): Network (N)
Modified Attack Complexity (MAC): High (H)
Modified Privileges Required (MPR): Low (L)
Modified User Interaction (MUI): Required (R)
Modified Confidentiality (MC): None (N)
Modified Scope (MS): Unchanged (U)
Modified Integrity (MI): High (H)
Modified Availability (MA): High (H)

created 2 months, 1 week ago Activity log

Created suggestion 2 months, 1 week ago

Mattermost Jira plugin had unauthenticated {{/ac/installed}} lifecycle callback during pending Jira Cloud install

Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 fail to authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret and disrupt the Jira integration via POST to /ac/installed during the pending-install window.. Mattermost Advisory ID: MMSA-2026-00654