How severe is CVE-2026-25561?

CVE-2026-25561 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-25561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25561?

CVE-2026-25561 affects Wekan Project Wekan. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25561?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-25561 have an EU (EUVD) identifier?

Yes. CVE-2026-25561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5711.

When was CVE-2026-25561 published?

CVE-2026-25561 was published on 2026-02-07 and last updated on 2026-06-17.

CVE-2026-25561

CVE-2026-25561 is a high-severity vulnerability in Wekan Project Wekan with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 7.1
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5711
Weakness: CWE-863
Affected product: Wekan Project Wekan
Published: 2026-02-07
Last modified: 2026-06-17

Description

WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent card/board relationship, enabling attempts to upload attachments with mismatched object relationships.

Frequently asked questions

What is CVE-2026-25561?: WeKan versions prior to 8.19 contain an authorization weakness in the attachment upload API. The API does not fully validate that provided identifiers (such as boardId, cardId, swimlaneId, and listId) are consistent and refer to a coherent card/board relationship, enabling attempts to upload attachments with mismatched object relationships.
How severe is CVE-2026-25561?: CVE-2026-25561 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-25561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25561?: CVE-2026-25561 affects Wekan Project Wekan. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25561?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-25561 have an EU (EUVD) identifier?: Yes. CVE-2026-25561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5711.
When was CVE-2026-25561 published?: CVE-2026-25561 was published on 2026-02-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wekan_project:wekan:*:*:*:*:*:*:*:*

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