CVE-2026-57288

Description

Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters to enumerate directory entries and to authenticate as a matching user whose password they know without knowing their exact user name.

CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-90 CWE-90

Affected Products

Vendor	Product	Versions
jenkins	active_directory	< 2.41.2

References

Advisories & Patches

https://www.jenkins.io/security/advisory/2026-06-24/#SECURITY-3651

Frequently Asked Questions

What is CVE-2026-57288? +

Jenkins Active Directory Plugin 2.41.1 and earlier does not escape the user name before building the LDAP search filter in the Windows native (ADSI) authentication path, allowing unauthenticated attackers to inject LDAP wildcard characters to enumerate directory entries and to authenticate as a matching user whose password they know without knowing their exact user name. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-57288? +

CVE-2026-57288 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-57288? +

CVE-2026-57288 affects products from jenkins, specifically: active_directory. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-57288? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-49268

A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input …

CVE-2026-44930 9.8

An LDAP injection vulnerability in the LDAP Certificate repository of the XKMS server in Apache CXF may allow an attacker …

CVE-2024-54852 9.8

When LDAP connection is activated in Teedy versions between 1.9 to 1.12, the username field of the login form is …

CVE-2024-33868 9.8

An issue was discovered in linqi before 1.4.0.1 on Windows. There is LDAP injection.

CVE-2026-41919 9.1

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') vulnerability in Apache OFBiz. This issue affects Apache …

CVE-2026-40459 8.8

PAC4J is vulnerable to LDAP Injection in multiple methods. A low-privileged remote attacker can inject crafted LDAP syntax into ID-based …