CVE-2023-25816 json
nextcloud vulnerable to Uncontrolled Resource Consumption
published 2023-02-24 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-29708
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
1.37% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/1820864 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- nextcloud security-advisories
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/nextcloud/server/pull/35965
patch
-
hackerone.com
/reports/1820864
exploit, mitigation, third-party-advisory
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-53q2-cm29-7j83
vendor-advisory
Sources
- CVE List CVE-2023-25816
- NVD CVE-2023-25816
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