CVE-2022-39330Network attack vector

Authenticated service slowdown via unbounded sharee pagination

Published Oct 27, 2022 · Updated Apr 23, 2025

Uncontrolled resource consumption in Nextcloud Server and Enterprise Server allows remote authenticated users to slow affected systems. The Circles sharee-recommendation path fails to bound pagination limit and offset values, permitting costly database queries and CPU work. A logged-in account and an enabled Circles app are required, and repeated crafted recommendation requests degrade availability without reported data access or modification.

CVSS severity4.8
Medium
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in Nextcloud Server and Enterprise Server allows remote authenticated users to slow affected systems. The Circles sharee-recommendation path fails to bound pagination limit and offset values, permitting costly database queries and CPU work. A logged-in account and an enabled Circles app are required, and repeated crafted recommendation requests degrade availability without reported data access or modification.

The record

CVE
CVE-2022-39330
Published
Oct 27, 2022
Updated
Apr 23, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-400, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 22.2.10
  2. Affected versionversion=>= 23.0.0, < 23.0.9
  3. Affected versionversion=>= 24.0.0, < 24.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 22.2.10; version=>= 23.0.0, < 23.0.9; version=>= 24.0.0, < 24.0.5

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.8GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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