What is CVE-2026-49268?

CVE-2026-49268 is a critical-severity vulnerability in Apache Shiro, classified under LDAP Injection. CVSS score: 9.1/10. Published 2026-06-17.

How severe is CVE-2026-49268?

Critical severity. CVSS v3 base score is 9.1 out of 10.

LDAP Injection in Apache Shiro

CVE-2026-49268

A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253…

EPSS: 0.005 (39.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Apache Shiro — versions 3.0.0
Apache Software Foundation Shiro — versions 0, 3.0.0-alpha-0

Weakness classification (CWE)

CWE-90 — LDAP Injection

References

security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)

Frequently asked questions

What is CVE-2026-49268?: CVE-2026-49268 is a critical-severity vulnerability in Apache Shiro, classified under LDAP Injection. CVSS score: 9.1/10. Published 2026-06-17.
How severe is CVE-2026-49268?: Critical severity. CVSS v3 base score is 9.1 out of 10.