CVE-2022-29159Public exploitNetwork attack vector

Cross-board stack movement via mismatched permission identifier

Published May 20, 2022 · Updated Apr 22, 2025

Authorization bypass in Nextcloud Deck before 1.4.8, 1.5.0 through 1.5.5, and 1.6.0 allows remote authenticated users to alter other boards. StackService::update checks update permission using the supplied stack identifier where the destination board identifier is required. Any authenticated account can exploit this identifier confusion to move a stack and its existing cards from an owned board onto another user's board.

CVSS severity5.0
Medium
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Authorization bypass in Nextcloud Deck before 1.4.8, 1.5.0 through 1.5.5, and 1.6.0 allows remote authenticated users to alter other boards. StackService::update checks update permission using the supplied stack identifier where the destination board identifier is required. Any authenticated account can exploit this identifier confusion to move a stack and its existing cards from an owned board onto another user's board.

The record

CVE
CVE-2022-29159
Published
May 20, 2022
Updated
Apr 22, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-639, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 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=< 1.4.8
  2. Affected versionversion=>= 1.5.0, < 1.5.6
  3. Affected versionversion== 1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=< 1.4.8; version=>= 1.5.0, < 1.5.6; version== 1.6.0

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/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 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 exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

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