VulnerabilityPublished 15 Dec 2025Updated 17 Dec 2025

CVE-2025-65779: wekan · Improper Access Control

Affects wekanSource CVE Database V5

Not known to be exploited · CVSS 7.5 High : upgrade to 18.16 soon.

Data as of 26 Oct 2026, 11:42 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 18.16

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade wekan/wekan to 18.16.

Affected software

Product	Affected	Fixed in
GitHubwekan/wekan`pkg:github/wekan/wekan`Other threats	Affected <18.16	Fixed in 18.16

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Wekan installations to version 18.16 or later immediately to apply the official fix.
Restrict network access to Wekan instances, especially those exposed to the internet, by implementing firewalls or VPNs.
Implement strict access control policies and monitor authorization logic in custom integrations or plugins to prevent similar flaws.
Conduct regular audits of board activity logs to detect unauthorized changes or suspicious reordering events.
Educate users and administrators about the importance of timely patching and monitoring for anomalous behavior.
Consider deploying Web Application Firewalls (WAFs) with rules to detect and block unauthorized API calls targeting board modifications.
Segment Wekan servers within internal networks to limit lateral movement if compromised.
Backup board data regularly to enable recovery in case of malicious manipulation.

Description

An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Unauthenticated attackers can update a board's "sort" value (Boards.allow returns true without verifying userId), allowing arbitrary reordering of boards.

Impact

For European organizations, this vulnerability poses a significant risk to the integrity of project management data. Unauthorized reordering of boards can lead to confusion, mismanagement of tasks, and disruption of workflows, potentially delaying projects and causing operational inefficiencies. While confidentiality and availability are not directly impacted, the integrity breach can erode trust in the system and complicate audit trails. Organizations in sectors with strict compliance requirements or those relying heavily on accurate task tracking may face regulatory or contractual risks if data integrity is compromised. The ease of exploitation without authentication means attackers can act stealthily and remotely, increasing the likelihood of attacks especially in environments where Wekan is exposed to the internet or insufficiently segmented networks. This could also facilitate further social engineering or follow-on attacks by creating chaos or misinformation within teams.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 22 Dec 2025, 15:37 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

Related threats