https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-27T07:02:17.153101+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cnvd-2022-06909 cnvd-2022-06909 2026-10-27T07:02:17.157066+00:00 cnvd-2022-06909 https://cve.radiocsirt.org/vuln/euvd-2026-32708 EUVD-2026-32708 2026-10-27T07:02:17.157101+00:00 EUVD-2026-32708 https://cve.radiocsirt.org/vuln/fkie_cve-2021-43840 fkie_cve-2021-43840 2026-10-27T07:02:17.157115+00:00

message_bus is a messaging bus for Ruby processes and web clients. In versions prior to 3.3.7 users who deployed message bus with diagnostics features enabled (default off) are vulnerable to a path traversal bug, which could lead to disclosure of secret information on a machine if an unintended user were to gain access to the diagnostic route. The impact is also greater if there is no proxy for your web application as the number of steps up the directories is not bounded. For deployments which uses a proxy, the impact varies. For example, If a request goes through a proxy like Nginx with `merge_slashes` enabled, the number of steps up the directories that can be read is limited to 3 levels. This issue has been patched in version 3.3.7. Users unable to upgrade should ensure that MessageBus::Diagnostics is disabled.

 https://cve.radiocsirt.org/vuln/ghsa-xmgj-5fh3-xjmm GHSA-xmgj-5fh3-xjmm — Path traversal when MessageBus::Diagnostics is enabled 2026-10-27T07:02:17.157146+00:00

Affected: RubyGems: message_bus

### Impact

Users who deployed message bus with diagnostics features enabled (default off) were vulnerable to a path traversal bug, which could lead to disclosure of secret information on a machine if an unintended user were to gain access to the diagnostic route. The impact is also greater if there is no proxy for your web application as the number of steps up the directories is not bounded. For deployments which uses a proxy, the impact varies. For example, If a request goes through a proxy like Nginx with `merge_slashes` enabled, the number of steps up the directories that can be read is limited to 3 levels.

### Patches

Patched in 3.3.7.

### Workarounds

Disable MessageBus::Diagnostics in production like environments.

 https://cve.radiocsirt.org/vuln/gsd-2021-43840 gsd-2021-43840 2026-10-27T07:02:17.157176+00:00 gsd-2021-43840