CVE-2022-31120

Audit-trail evasion via undispatched federated-share events

Published Aug 4, 2022 · Updated Apr 23, 2025

Insufficient logging in Nextcloud Server before 22.2.7 and 23.0.0 through 23.0.3 allows remote authenticated users to conceal federated-share actions. RequestHandlerController completes create, accept, decline, unshare, and permission-change operations without dispatching CriticalActionPerformedEvent records to the audit logger. Federated sharing and a user-authorized share action are required; the resulting audit gap allows brute-force activity to go unnoticed.

CVSS severity2.1
Low
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient logging in Nextcloud Server before 22.2.7 and 23.0.0 through 23.0.3 allows remote authenticated users to conceal federated-share actions. RequestHandlerController completes create, accept, decline, unshare, and permission-change operations without dispatching CriticalActionPerformedEvent records to the audit logger. Federated sharing and a user-authorized share action are required; the resulting audit gap allows brute-force activity to go unnoticed.

The record

CVE
CVE-2022-31120
Published
Aug 4, 2022
Updated
Apr 23, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-778, T1110
Attack vector
adjacent
Privileges
admin

Timeline

How it unfolded

  1. Aug 4, 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=< 22.2.7
  2. Affected versionversion=>= 23.0.0, < 23.0.4

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesadmin

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 22.2.7; version=>= 23.0.0, < 23.0.4

Published CVSS scores

2.1GitHubCVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-778Insufficient Logging
T1110Brute Force

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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