CVE-2026-18453
A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of op_shared_search allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USE_ONE_BACKEND control, resulting in denial of service.
- Published Sep 7, 2026
- CVSS 7.5 high
- 0.8% chance of exploitation in the next 30 days (EPSS)
- A fix is available