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Vulnerability record · CVE-2024-22403 · published 18 January 2024

CVE-2024-22403: Nextcloud server insufficient session expiration vulnerability

Nextcloud · Nextcloud Server

Nextcloud server is a self hosted personal cloud system. In affected versions OAuth codes did not expire. When an attacker would get access to an authorization code they could authenticate at any time using the code. As of version 28.0.0 OAuth codes are invalidated after 10 minutes and will no longer be authenticated. To exploit this vulnerability an attacker would need to intercept an OAuth code from a user session. It is recommended that the Nextcloud Server is upgraded to 28.0.0. There are no known workarounds for this vulnerability.

3.7 CVSS 3.1 Low EPSS 0.45% · top 63.2% CWE-613 · Insufficient session expiration
3.7CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Nextcloud server is a self hosted personal cloud system. In affected versions OAuth codes did not expire. When an attacker would get access to an authorization code they could authenticate at any time using the code. As of version 28.0.0 OAuth codes are invalidated after 10 minutes and will no longer be authenticated. To exploit this vulnerability an attacker would need to intercept an OAuth code from a user session. It is recommended that the Nextcloud Server is upgraded to 28.0.0. There are no known workarounds for this vulnerability.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wppc-f5g8-vx36 Vendor Advisory
https://github.com/nextcloud/server/pull/40766 PatchVendor Advisory
https://hackerone.com/reports/1784162 Permissions RequiredThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/S6PN4GVJ5TZUC6WSG4X3ZA3AM
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wppc-f5g8-vx36 Vendor Advisory
https://github.com/nextcloud/server/pull/40766 PatchVendor Advisory
https://hackerone.com/reports/1784162 Permissions RequiredThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/S6PN4GVJ5TZUC6WSG4X3ZA3AM

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-22403), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.