CVE-2023-22471Network attack vector

Cross-user attachment deletion via unchecked identifier

Published Jan 14, 2023 · Updated Mar 10, 2025

Broken access control in affected Nextcloud Deck releases allows remote authenticated users to delete other users' attachments. The attachment deletion path fails to consistently resolve the supplied attachment identifier within the requested card's authorized share context. A logged-in user must submit a crafted deletion request, and the bounded consequence is removal of another user's attached file.

CVSS severity4.3
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in affected Nextcloud Deck releases allows remote authenticated users to delete other users' attachments. The attachment deletion path fails to consistently resolve the supplied attachment identifier within the requested card's authorized share context. A logged-in user must submit a crafted deletion request, and the bounded consequence is removal of another user's attached file.

The record

CVE
CVE-2023-22471
Published
Jan 14, 2023
Updated
Mar 10, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-639, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 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=>= 1.60, < 1.6.5
  2. Affected versionversion=>= 1.7.0, < 1.7.3
  3. Affected versionversion=>= 1.8.0, < 1.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=>= 1.60, < 1.6.5; version=>= 1.7.0, < 1.7.3; version=>= 1.8.0, < 1.8.2

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

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

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1485Data Destruction

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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