Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext. A remote unauthenticated attacker can use these credentials to log into Confluence and access all content accessible to users in the confluence-users group.
Atlassian · Confluence
Known ransomware use: Unknown
Follow the source advisory and validate exposure in your environment.
Apply updates per vendor instructions.
Recent reporting that mentions CVE-2022-26138.
CISA has added a critical Confluence vulnerability tracked as CVE-2022-26138 to its list of bugs abused in the wild, a flaw that can provide remote attackers with hardcoded credentials following successful exploitation. [...]
Attackers almost immediately leapt on a just-disclosed bug, CVE-2022-26138, affecting Atlassian Confluence, which allows remote, unauthenticated actors unfettered access to Confluence data.