CVE-2022-24889Public exploitNetwork attack vector

Administrator app installation via automatic setup action

Published Apr 27, 2022 · Updated Apr 22, 2025

CSRF in Nextcloud Server 21 before 21.0.8, 22 before 22.2.4, and 23 before 23.0.1 allows remote attackers to induce app installation. RecommendedApps.vue called installApps automatically from its mounted hook after fetching the recommended-app list, without a separate confirmation action. Exploitation requires an administrator to follow an attacker's crafted interaction; the resulting change is limited to enabling Nextcloud-recommended apps, which expands the server's attack surface.

CVSS severity2.4
Low
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Nextcloud Server 21 before 21.0.8, 22 before 22.2.4, and 23 before 23.0.1 allows remote attackers to induce app installation. RecommendedApps.vue called installApps automatically from its mounted hook after fetching the recommended-app list, without a separate confirmation action. Exploitation requires an administrator to follow an attacker's crafted interaction; the resulting change is limited to enabling Nextcloud-recommended apps, which expands the server's attack surface.

The record

CVE
CVE-2022-24889
Published
Apr 27, 2022
Updated
Apr 22, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-345
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 21.0.8
  2. Affected versionversion=< 22.2.4
  3. Affected versionversion=< 23.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 21.0.8; version=< 22.2.4; version=< 23.0.1

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
2.4GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-345Insufficient Verification of Data Authenticity

Public exploit references

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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