Apache James Server prior to version 3.6.2 contains a path traversal vulnerability. The fix for CVE-2021-40525 does not prepend delimiters upon valid directory validations. Affected implementations include: - maildir mailbox store - Sieve file repository This enables a user to access other users data stores (limited to user names being prefixed by the value of the username being used).

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-22931
• https://lists.apache.org/thread/bp8yql4wws56jlh0vxoowj7foothsmpr
• https://www.openwall.com/lists/oss-security/2022/02/07/1
• apache/james-project#877
• apache/james-project@b1e891a