CVE-2023-26428: open-xchange open-xchange_appsuite_backend

Vulnerability summary

CVE-2023-26428 is a medium (CVSS 6.5) vulnerability in open-xchange open-xchange_appsuite_backend. EPSS estimates a 0.98% chance of exploitation in the next 30 days, higher than 61.6% of scored vulnerabilities.

Timeline

1. 20-06-2023
   PublishedVulnerability first disclosed.
2. 02-08-2024
   Last modifiedVulnerability information updated.

Description

Attackers can successfully request arbitrary snippet IDs, including E-Mail signatures of other users within the same context. Signatures of other users could be read even though they are not explicitly shared. We improved permission handling when requesting snippets that are not explicitly shared with other users. No publicly available exploits are known.

• CWE-639Authorization Bypass Through User-Controlled KeyThe system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.