CVE-2023-35172

Name: CVE-2023-35172
Creator: NVD / NIST
Published: 2023-06-23T21:15:09.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2023-35172 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. NextCloud Server and NextCloud Enterprise Server provide file storage for Nextcloud, a self-hosted productivity platform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, an attacker can bruteforce the password reset links. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

NextCloud Server and NextCloud Enterprise Server provide file storage for Nextcloud, a self-hosted productivity platform. In NextCloud Server versions 25.0.0 until 25.0.7 and 26.0.0 until 26.0.2 and Nextcloud Enterprise Server versions 21.0.0 until 21.0.9.12, 22.0.0 until 22.2.10.12, 23.0.0 until 23.0.12.7, 24.0.0 until 24.0.12.2, 25.0.0 until 25.0.7, and 26.0.0 until 26.0.2, an attacker can bruteforce the password reset links. Nextcloud Server n 25.0.7 and 26.0.2 and Nextcloud Enterprise Server 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7, and 26.0.2 contain a patch for this issue. No known workarounds are available.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-307

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	>= 21.0.0, < 21.0.9.12
Nextcloud	Nextcloud Server	>= 22.0.0, < 22.2.10.12
Nextcloud	Nextcloud Server	>= 23.0.0, < 23.0.12.7
Nextcloud	Nextcloud Server	>= 24.0.0, < 24.0.12.2
Nextcloud	Nextcloud Server	>= 25.0.0, < 25.0.7
Nextcloud	Nextcloud Server	>= 26.0.0, < 26.0.2

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mjf5-p765-qmr6Vendor Advisory
https://github.com/nextcloud/server/pull/38267Issue Tracking
https://hackerone.com/reports/1987062Permissions Required
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mjf5-p765-qmr6Vendor Advisory
https://github.com/nextcloud/server/pull/38267Issue Tracking
https://hackerone.com/reports/1987062Permissions Required

Timeline

Published: Jun 23, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-35172?

How severe is CVE-2023-35172?

CVE-2023-35172 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2023-35172?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-35172?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST