CVE-2026-6673 Mattermost Jira plugin had unauthenticated {{/ac/installed}} lifecycle callback during pending Jira Cloud install
| Reporter | Title | Published | Views | Family All 14 |
|---|---|---|---|---|
 | CVE-2026-6673 | 22 Jun 202613:38 | – | attackerkb |
 | CVE-2026-6673 | 22 Jun 202616:23 | – | circl |
 | CVE-2026-6673 | 22 Jun 202613:38 | – | cve |
 | CVE-2026-6673 Mattermost Jira plugin had unauthenticated {{/ac/installed}} lifecycle callback during pending Jira Cloud install | 22 Jun 202613:38 | – | cvelist |
 | EUVD-2026-38249 | 22 Jun 202613:38 | – | euvd |
 | Mattermost doesn't authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret | 22 Jun 202615:30 | – | github |
 | CVE-2026-6673 | 22 Jun 202614:17 | – | nvd |
 | GHSA-JQGV-39MG-7C2R Mattermost doesn't authenticate Atlassian Connect installed callbacks, allowing a remote unauthenticated attacker to inject a rogue sharedSecret | 22 Jun 202615:30 | – | osv |
 | PT-2026-51316 | 22 Jun 202600:00 | – | ptsecurity |
 | CVE-2026-6673: Missing Authentication for Critical Function | 22 Jun 202600:00 | – | rapid7 |
10
| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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22 Jun 2026 13:38Current
6Medium risk
Vulners AI Score6
CVSS 3.16.4
EPSS0.00299
SSVC