Vulnerability · Published May 16, 2025 · Assigned by GitHub_M
CVE-2025-47790Nextcloud Server doesn't request second factor after session timeout
Medium 6.4
In plain English
A medium-severity improper authentication in security-advisories from nextcloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official description
Nextcloud Server is a self hosted personal cloud system. Nextcloud Server prior to 29.0.15, 30.0.9, and 31.0.3 and Nextcloud Enterprise Server prior to 26.0.13.15, 27.1.11.15, 28.0.14.6, 29.0.15, 30.0.9, and 31.0.3 have a bug with session handling. The bug caused skipping the second factor confirmation after a successful login with the username and password when the server was configured with `remember_login_cookie_lifetime` set to `0`, once the session expired on the page to select the second factor and the page is reloaded. Nextcloud Server 29.0.15, 30.0.9, and 31.0.3 and Nextcloud Enterprise Server is upgraded to 26.0.13.15, 27.1.11.15, 28.0.14.6, 29.0.15, 30.0.9 and 31.0.3 contain a patch. As a workaround, set the `remember_login_cookie_lifetime` in config.php to a value other than `0`, e.g. `900`. Beware that this is only a workaround for new sessions created after the configuration change. System administration can delete affected sessions.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nextcloud | security-advisories | >= 26.0.0, < 26.0.13.15>= 27.0.0, < 27.1.11.15>= 28.0.0, < 28.0.14.6>= 29.0.0, < 29.0.15>= 30.0.0, < 30.0.9>= 31.0.0, < 31.0.3 |
Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9h3w-f3h4-qqrh x_refsource_CONFIRM
- https://github.com/nextcloud/server/pull/51905 x_refsource_MISC
- https://hackerone.com/reports/2729367 x_refsource_MISC