Description
SOGo before 5.12.13 contains an improper restriction of excessive authentication attempts vulnerability that allows unauthenticated attackers to reset account passwords by repeatedly guessing secret-question answers via the passwordRecoveryCheck endpoint without lockout or rate limiting. Attackers can submit unlimited candidate answers to obtain a valid recovery JWT, then use it to change the account password without the old credential and log in via the connect endpoint, achieving full account takeover on accounts without TOTP enabled.
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 Unauthenticated Password Recovery Brute Force third-party-advisory