Cyber Resilience

CVE-2026-25566

Access Control in Wekan Project Wekan ≤ 8.19

Public PoCAccess Control
Published
07 February 2026
Modified
14 July 2026
Patch / advisory
View advisory
CVSS Score v4 7.1
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0022 13th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-25566 is a high-severity Incorrect Authorization (CWE-863) vulnerability in Wekan Project Wekan. Its CVSS base score is 7.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

WeKan versions prior to 8.19 contain an authorization vulnerability in card move logic. A user can specify a destination board/list/swimlane without adequate authorization checks for the destination and without validating that destination objects belong to the destination board, potentially enabling…

more

unauthorized cross-board moves.

CWE(s)
CWE-863

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1565.001 Stored Data Manipulation Impact
Adversaries may insert, delete, or manipulate data at rest in order to influence external outcomes or hide activity, thus threatening the integrity of the data.
attack.mitre.org →
Why these techniques?

Authz bypass in web app directly enables exploitation of public-facing service and stored data manipulation via unauthorized object moves.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-25561Same product: Wekan Project Wekan
CVE-2026-25568Same product: Wekan Project Wekan
CVE-2026-25859Same product: Wekan Project Wekan
CVE-2026-25564Same product: Wekan Project Wekan
CVE-2026-1897Same product: Wekan Project Wekan
CVE-2026-1963Same product: Wekan Project Wekan
CVE-2026-25565Same product: Wekan Project Wekan
CVE-2026-2208Same product: Wekan Project Wekan
CVE-2026-1964Same product: Wekan Project Wekan
CVE-2026-2205Same product: Wekan Project Wekan

Affected Assets

wekan project
wekan
≤ 8.19

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)
  • AC-3 Access Enforcement
  • AC-4 Information Flow Enforcement
  • SI-10 Information Input Validation
Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)
  • 5 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)

—

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match
prevent

Directly enforces authorization checks on card-move operations so a user cannot specify an unauthorized destination board/list/swimlane.

AC-4 Information Flow Enforcement good match
prevent

Enforces information-flow rules between boards, blocking cross-board card moves that violate board ownership or membership policies.

SI-10 Information Input Validation partial match
prevent

Requires validation that supplied destination identifiers actually belong to the claimed destination board before the move is performed.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.AA-05 mostly match
prevents

Defining, enforcing, and reviewing access authorizations and least privilege directly prevents incorrect authorization checks.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.15 Access control partial match
prevents

Requiring consistency between access rights and classification plus formal approval steps ensures that the authorization logic correctly distinguishes between entities that should and should not be granted access.

A.5.18 Access rights partial match
prevents

Enforcing policy-driven approval and role-change reviews stops incorrect or stale authorization decisions from remaining in effect after job changes or terminations.

A.8.3 Information access restriction partial match
prevents

By tying access rights to identity, device, location and classification, the control reduces the likelihood that an authorization decision will be based on an incorrect or bypassed policy.

References