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CVE-2025-47790— Nextcloud Server doesn't request second factor after session timeout

Quick assessment

Affected
nextcloud security-advisories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud 29.0.15之前版本、30.0.9之前版本和31.0.3之前版本存在授权问题漏洞，该漏洞源于会话处理错误，可能导致跳过第二因素确认。

CVSS 6.4 · Medium EPSS 0.38% · P30
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I. Basic Information for CVE-2025-47790

Vulnerability Information
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Vulnerability Title
Nextcloud Server doesn't request second factor after session timeout
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Nextcloud 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nextcloud是德国Nextcloud公司的一套开源的自托管文件同步和共享的通信应用平台。 Nextcloud 29.0.15之前版本、30.0.9之前版本和31.0.3之前版本存在授权问题漏洞，该漏洞源于会话处理错误，可能导致跳过第二因素确认。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nextcloud security-advisories >= 26.0.0, < 26.0.13.15 -

II. Public POCs for CVE-2025-47790

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III. Intelligence Information for CVE-2025-47790

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Vendor Advisories for CVE-2025-47790 (1)

Same Patch Batch · nextcloud · 2025-05-16 · 5 CVEs total

CVE-2025-47792 5.0 MEDIUM Nextcloud Desktop 3rdparty applications can create share links via socket API
CVE-2025-47793 4.3 MEDIUM Nextcloud Server and Groupfolders app vulnerable to bypass of group folder quota limit usi
CVE-2025-47791 4.3 MEDIUM Nextcloud Server's test remote endpoint is not rate limited
CVE-2025-47794 2.6 LOW Nextcloud Server vulnerable to insecure temporary file creation, race with write access an

IV. Related Vulnerabilities

Same product: security-advisories
Same vendor: nextcloud
Same weakness: CWE-287

V. Comments for CVE-2025-47790

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