CVE-2026-102731 Apache Directory LDAP API - Denial of Service

Apache Directory LDAP API 1.2.0 to < 1.2.9 contains a denial of service caused by excessive memory allocation from small BER-encoded responses, letting attackers cause OutOfMemoryError and service disruption, exploit requires network access.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.43% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-789

Vendor fix

Upgrade to version 1.2.9 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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