CVE-2023-35172Nextcloud Server password reset endpoint is not brute force protected
- 8.7HighCVSS base score
- 0.92%Exploitation in 30 daysEPSS · top 39% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By GitHub_M
- 9 days later
· 9 days later
Published
- 18 months later
· 18 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | High8.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.92% · top 39% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.
Affected products
nextcloud · security-advisories
- affected Nextcloud Server >= 25.0.0, < 25.0.7
- affected Nextcloud Server >= 26.0.0, < 26.0.2
- affected Nextcloud Enterprise Server >= 25.0.0, < 25.0.7
- affected Nextcloud Enterprise Server >= 26.0.0, < 26.0.2
- affected Nextcloud Enterprise Server >= 21.0.0, < 21.0.9.12
- affected Nextcloud Enterprise Server >= 22.0.0, < 22.2.10.12
- affected Nextcloud Enterprise Server >= 23.0.0, < 23.0.12.7
- affected Nextcloud Enterprise Server >= 24.0.0, < 24.0.12.2
References
References3
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-mjf5-p765-qmr6 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/nextcloud/server/pull/38267 (opens in a new tab)x_refsource_MISCx_transferred
- https://hackerone.com/reports/1987062 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-39176 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-35172)Record last updated .