LDAP Injection in Kanboard
CVE-2026-21880
Kanboard is project management software focused on Kanban methodology. Versions 1.2.48 and below have an LDAP Injection vulnerability in the LDAP authentication mechanism. User-supplied input is directly substituted into LDAP search filters without proper sanitization, allowing attackers to enumerate all LDAP users, discover sensitive user attributes, and perform targeted attacks against specific accounts. This issue is fixed in version 1.2.49.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Kanboard — versions < 1.2.49
Weakness classification (CWE)
References
- github.com/kanboard/kanboard/security/advisories/GHSA-v66r-m28r-wmq7 (Exploit, Vendor Advisory)
- github.com/kanboard/kanboard/commit/dd374079f7c2d1dab74c1680960e684ff8668586 (Patch)
- github.com/kanboard/kanboard/releases/tag/v1.2.49 (Release Notes)
Frequently asked questions
- What is CVE-2026-21880?
- CVE-2026-21880 is a medium-severity vulnerability in Kanboard, classified under LDAP Injection. CVSS score: 5.3/10. Published 2026-01-08.
- How severe is CVE-2026-21880?
- Medium severity. CVSS v3 base score is 5.3 out of 10.