Nextcloud Server is a data storage system for Nextcloud, a self-hosted productivity platform. When multiple requests are sent in parallel, all of them were executed even if the amount of faulty requests succeeded the limit by the time the response was sent to the client. This allowed someone to send as many requests the server could handle in parallel to bruteforce protected details instead of the configured limit, default 8. Nextcloud Server versions 25.0.7 and 26.0.2 and Nextcloud Enterprise Server versions 21.0.9.12, 22.2.10.12, 23.0.12.7, 24.0.12.2, 25.0.7 and 26.0.2 contain patches for this issue.
CVE-2023-32320
This high-severity CVE scores 8.7 under NVD CVSS v3. EPSS exploit probability: 0.9%, top 45% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.7
- EG Score
- 8.7(medium)
- EG Risk
- 39(Track)EG Risk 39/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity87% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 55.1%
- KEV
- Not listed
Published
June 22, 2023
Last Modified
November 21, 2024
References (6)
- security-advisories@githubhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-qphh-6xh7-vffg
- security-advisories@githubhttps://github.com/nextcloud/server/pull/38274
- security-advisories@githubhttps://hackerone.com/reports/1918525
- af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qphh-6xh7-vffg
- af854a3a-2127-422b-91ae-364da2661108https://github.com/nextcloud/server/pull/38274
- af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/1918525
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 15× in last 7d / 55× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Same CWE
10 shownCWE-307
Frequently asked(5)
What is CVE-2023-32320?
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Is CVE-2023-32320 actively exploited?
What is the CVSS score of CVE-2023-32320?
How do I remediate CVE-2023-32320?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2023-32320
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