Description
SOGo before 5.12.13 contains a server-side request forgery vulnerability that allows authenticated users to make the server connect to arbitrary internal host:port destinations by supplying a user-controlled URL to the Calendar/addWebCalendar endpoint. Attackers can trigger a reload of the subscribed web calendar via the reload endpoint and distinguish response outcomes such as connection failures, timeouts, authentication prompts, or invalid content to probe the internal network from the server's position.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Alinto | sogo | < 5.12.13 | 5.12.13 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | sogo | No fix yet | — |
| Debian 12 | sogo | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | sogo | No fix yet | — |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | sogo | No fix yet | — |
| Ubuntu Pro 22.04 LTS | sogo | No fix yet | — |
| Ubuntu Pro 20.04 LTS | sogo | No fix yet | — |
| Ubuntu Pro 18.04 LTS | sogo | No fix yet | — |
| Ubuntu Pro 16.04 LTS | sogo | No fix yet | — |
References
- Vendor Patch patch release-notes
- VulnCheck Advisory: SOGo before 5.12.13 SSRF via Web Calendar Subscriptions third-party-advisory