CVE-2026-1963Network attack vector

Cross-board attachment actions via missing authorization

Published Feb 5, 2026 · Updated Feb 5, 2026

Improper access control in WeKan 8.0 through 8.20 allows remote authenticated users to move or validate inaccessible attachments. The moveAttachmentToStorage and validateAttachment Meteor methods accept an attachment ID without confirming login or board visibility, while storage-moving paths also accept an unrestricted destination. Any authenticated user able to invoke these methods can act on attachments from boards that user cannot view, affecting attachment integrity and storage handling.

CVSS severity5.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in WeKan 8.0 through 8.20 allows remote authenticated users to move or validate inaccessible attachments. The moveAttachmentToStorage and validateAttachment Meteor methods accept an attachment ID without confirming login or board visibility, while storage-moving paths also accept an unrestricted destination. Any authenticated user able to invoke these methods can act on attachments from boards that user cannot view, affecting attachment integrity and storage handling.

The record

CVE
CVE-2026-1963
Published
Feb 5, 2026
Updated
Feb 5, 2026
Vendor
WeKan
Product
WeKan
Classifications
CWE-266, CWE-284, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 2026Record 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=8.0
  2. Affected versionversion=8.1
  3. Affected versionversion=8.10
  4. Affected versionversion=8.11
  5. Affected versionversion=8.12
  6. Affected versionversion=8.13
  7. Affected versionversion=8.14
  8. Affected versionversion=8.15
  9. Affected versionversion=8.16
  10. Affected versionversion=8.17
  11. Affected versionversion=8.18
  12. Affected versionversion=8.19
  13. Affected versionversion=8.2
  14. Affected versionversion=8.20
  15. Affected versionversion=8.3
  16. Affected versionversion=8.4
  17. Affected versionversion=8.5
  18. Affected versionversion=8.6
  19. Affected versionversion=8.7
  20. Affected versionversion=8.8
  21. Affected versionversion=8.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WeKan · WeKanversion=8.0; version=8.1; version=8.10; version=8.11; version=8.12; version=8.13; version=8.14; version=8.15; version=8.16; version=8.17; version=8.18; version=8.19; version=8.2; version=8.20; version=8.3; version=8.4; version=8.5; version=8.6; version=8.7; version=8.8; version=8.9

Published CVSS scores

5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-266Incorrect Privilege Assignment
CWE-284Improper Access Control
T1565Data Manipulation

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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