CVE-2026-22185
OpenLDAP vulnerability analysis and mitigation

OpenLDAP Lightning Memory-Mapped Database (LMDB) versions up to and including 0.9.14, prior to commit 8e1fda8, contain a heap buffer underflow in the readline() function of mdb_load. When processing malformed input containing an embedded NUL byte, an unsigned offset calculation can underflow and cause an out-of-bounds read of one byte before the allocated heap buffer. This can cause mdb_load to crash, leading to a limited denial-of-service condition.


SourceNVD

Related OpenLDAP vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2022-29155CRITICAL9.8
  • NixOSNixOS
  • libldap-2_4-2
NoYesMay 04, 2022
CVE-2023-2953HIGH7.5
  • NixOSNixOS
  • openldap-servers-debuginfo
NoYesMay 30, 2023
CVE-2020-25710HIGH7.5
  • NixOSNixOS
  • cpe:2.3:a:openldap:openldap
NoYesMay 28, 2021
CVE-2020-25709HIGH7.5
  • NixOSNixOS
  • compat-libldap-2_3-0
NoYesMay 18, 2021
CVE-2026-22185MEDIUM4.6
  • OpenLDAPOpenLDAP
  • openldap2_5
NoYesJan 07, 2026

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