CVE-2026-29056: Kanboard is project management software focused on Kanban methodology

Q: How do I fix CVE-2026-29056?

kanboard: upgrade to 1.2.51. Exact commands for each OS are on this page.

Q: Is CVE-2026-29056 being exploited?

CVE-2026-29056 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-29056 affect?

CVE-2026-29056 affects kanboard. Severity is high (CVSS 8.8). 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()` w

Q: How urgent is CVE-2026-29056?

Priority 44/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2026-29056 is a high-severity flaw (CVSS 8.8) affecting kanboard. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-915
Published	2026-03-18
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: kanboard

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-18 02:16 UTCPublished CVE record published
2026-06-17 10:29 UTCUpdated Record last modified

kanboard kanboard UPGRADE

Affected: < 1.2.51

Fixed in: 1.2.51

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kanboard || rpm -q kanboard || kanboard --version

2. UPGRADE to 1.2.51 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kanboard

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kanboard

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-29056?

kanboard: upgrade to 1.2.51. Exact commands for each OS are on this page.

Is CVE-2026-29056 being exploited?

CVE-2026-29056 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-29056 affect?

CVE-2026-29056 affects kanboard. Severity is high (CVSS 8.8). 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()` w

How urgent is CVE-2026-29056?

Priority 44/100. High severity; Public exploit reference

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References

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