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CVE-2026-21880— Kanboard LDAP Injection Vulnerability can Lead to User Enumeration and Information Disclosure

Quick assessment

Affected
kanboard kanboard
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kanboard是Kanboard开源的一套开源的可视化任务板软件。该软件能够根据业务定制面板。 Kanboard 1.2.48及之前版本存在安全漏洞，该漏洞源于LDAP认证机制存在LDAP注入，可能导致枚举所有LDAP用户。

CVSS 5.3 · Medium EPSS 0.40% · P32
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I. Basic Information for CVE-2026-21880

Vulnerability Information
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Vulnerability Title
Kanboard LDAP Injection Vulnerability can Lead to User Enumeration and Information Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
LDAP查询中使用的特殊元素转义处理不恰当(LDAP注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Kanboard 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kanboard是Kanboard开源的一套开源的可视化任务板软件。该软件能够根据业务定制面板。 Kanboard 1.2.48及之前版本存在安全漏洞，该漏洞源于LDAP认证机制存在LDAP注入，可能导致枚举所有LDAP用户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kanboard kanboard < 1.2.49 -

II. Public POCs for CVE-2026-21880

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III. Intelligence Information for CVE-2026-21880

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Patches & Fixes for CVE-2026-21880 (1)

Vendor Advisories for CVE-2026-21880 (1)

Other References for CVE-2026-21880 (1)

Same Patch Batch · kanboard · 2026-01-08 · 3 CVEs total

CVE-2026-21881 9.1 CRITICAL Kanboard is Vulnerable to Reverse Proxy Authentication Bypass
CVE-2026-21879 4.7 MEDIUM Kanboard vulnerable to Open Redirect via protocol-relative URLs

IV. Related Vulnerabilities

Same product: kanboard
Same vendor: kanboard
Same weakness: CWE-90

V. Comments for CVE-2026-21880

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