It was possible to read space and topic information as an unauthorized user.
|Advisory Release Date|
Microblogging for Confluence
Linchpin Intranet Suite
Linchpin Intranet Suite 5.3.3 and all prior versions
Microblogging for Confluence 6.3.0 and all prior versions
Linchpin Intranet Suite 5.4.0
Microblogging for Confluence 6.3.1
The issue was discovered by Jafar Abo Nada via the Atlassian bug bounty program. The researcher could identify that attackers could potentially read space and topic information (with a known space key), even if they have no access to the space.
Affected are the apps "Microblogging for Confluence" up to and including version 6.3.0 and "Linchpin Intranet Suite" up to and including version 5.3.3.
The vulnerability is rated as 7.1 according to CVSS. The score is calculated as CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.
For Microblogging for Confluence customers: Update to Microblogging for Confluence version 6.3.1 or later.
For Linchpin Intranet Suite customers: Update to Linchpin Suite 5.4.0 or later.
Should you be unable to update your product to one of the listed versions, please reach out to our support team at https://seibert.biz/help.