WeKan up to 8.20 Attachment Storage models/attachments.js MoveStorageBleed access control

Summaryinfo

A vulnerability, which was classified as critical, has been found in WeKan up to 8.20. This impacts an unknown function of the file models/attachments.js of the component Attachment Storage. This manipulation causes access control. This vulnerability is registered as CVE-2026-1963. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in WeKan up to 8.20. Affected by this vulnerability is an unknown functionality of the file models/attachments.js of the component Attachment Storage. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-1963. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 8.21 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch c413a7e860bc4d93fe2adcf82516228570bf382d is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5526). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 6.3
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: WeKan 8.21
Patch: c413a7e860bc4d93fe2adcf82516228570bf382d

Timelineinfo

02/05/2026 Advisory disclosed
02/05/2026 +0 days VulDB entry created
03/06/2026 +29 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: c413a7e860bc4d93fe2adcf82516228570bf382d
Status: Confirmed

CVE: CVE-2026-1963 (🔒)
GCVE (CVE): GCVE-0-2026-1963
GCVE (VulDB): GCVE-100-344485
EUVD: 🔒

Entryinfo

Created: 02/05/2026 11:57 AM
Updated: 03/06/2026 11:22 PM
Changes: 02/05/2026 11:57 AM (58), 02/06/2026 06:34 AM (30), 02/06/2026 01:46 PM (1), 03/06/2026 11:22 PM (12)
Complete: 🔍
Submitter: MegaManSec
Cache ID: 244::40

Submitinfo

Accepted

  • Submit #742678: Wekan <8.21 Improper access control (CWE-284) (by MegaManSec)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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