CVE-2023-45148 json
Rate limiter not working reliable when Memcached is installed in Nextcloud
published 2023-10-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-49455
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
Nextcloud is an open source home cloud server. When Memcached is used as `memcache.distributed` the rate limiting in Nextcloud Server could be reset unexpectedly resetting the rate count earlier than intended. Users are advised to upgrade to versions 25.0.11, 26.0.6 or 27.1.0. Users unable to upgrade should change their config setting `memcache.distributed` to `\OC\Memcache\Redis` and install Redis instead of Memcached.
Patch / fix
- nextcloud nextcloud_server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6
- github.com/nextcloud/server#40293 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
Affected products
- nextcloud security-advisories
Classification
- Weakness
-
- CWE-307 Improper Restriction of Excessive Authentication Attempts
References
-
github.com
/nextcloud/server/pull/40293
issue-tracking, patch
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-xmhp-7vr4-hp63
vendor-advisory
-
hackerone.com
/reports/2110945
permissions-required
Sources
- CVE List CVE-2023-45148
- NVD CVE-2023-45148
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.