How severe is CVE-2026-29056?

CVE-2026-29056 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-29056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29056?

CVE-2026-29056 affects Kanboard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29056?

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-2026-29056 have an EU (EUVD) identifier?

Yes. CVE-2026-29056 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12740.

When was CVE-2026-29056 published?

CVE-2026-29056 was published on 2026-03-18 and last updated on 2026-06-17.

CVE-2026-29056

CVE-2026-29056 is a high-severity vulnerability in Kanboard with a CVSS 3.x base score of 8.8. 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-915.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.0
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12740
Weakness: CWE-915
Affected product: Kanboard
Published: 2026-03-18
Last modified: 2026-06-17

Description

Kanboard is project management software focused on Kanban methodology. Prior to 1.2.51, Kanboard's user invite registration endpoint (`UserInviteController::register()`) accepts all POST parameters and passes them to `UserModel::create()` without filtering out the `role` field. An attacker who receives an invite link can inject `role=app-admin` in the registration form to create an administrator account. Version 1.2.51 fixes the issue.

Frequently asked questions

What is CVE-2026-29056?: Kanboard is project management software focused on Kanban methodology. Prior to 1.2.51, Kanboard's user invite registration endpoint (`UserInviteController::register()`) accepts all POST parameters and passes them to `UserModel::create()` without filtering out the `role` field. An attacker who receives an invite link can inject `role=app-admin` in the registration form to create an administrator account. Version 1.2.51 fixes the issue.
How severe is CVE-2026-29056?: CVE-2026-29056 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-29056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29056?: CVE-2026-29056 affects Kanboard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29056?: 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-2026-29056 have an EU (EUVD) identifier?: Yes. CVE-2026-29056 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12740.
When was CVE-2026-29056 published?: CVE-2026-29056 was published on 2026-03-18 and last updated on 2026-06-17.

References

https://github.com/kanboard/kanboard/security/advisories/GHSA-2jvj-q44v-6p3x

Affected products (1)

cpe:2.3:a:kanboard:kanboard:*:*:*:*:*:*:*:*

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