Summary
389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.
Security Fix(es):
* 389-ds-base: 389-ds-base: pre-auth LDAP filter injection in CleanAllRUV status check (CVE-2026-11770)
* 389-ds-base: 389-ds-base: NULL pointer dereference in deref control plugin BER parser (CVE-2026-11788)
* 389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica ID parsing (CVE-2026-15722)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 6
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | 389-ds-base | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
| AlmaLinux · 8 | 389-ds-base-devel | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
| AlmaLinux · 8 | 389-ds-base-legacy-tools | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
| AlmaLinux · 8 | 389-ds-base-libs | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
| AlmaLinux · 8 | 389-ds-base-snmp | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
| AlmaLinux · 8 | python3-lib389 | 1.4.3.39-26.module_el8.10.0+4254+e9c4b400 |
Vulnerabilities 3
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High 7.5
389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check
A flaw was found in 389 Directory Server. An unauthenticated remote attacker can inject LDAP search filters into the CleanAllRUV replication status-check extended operation. Because the handler performs the search against cn=config with elevated replication p…
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High 7.5
389-ds-base: 389-ds-base: pre-authentication stack buffer overflow in get_ruvelement_from_berval() via unbounded replica id parsing
A stack buffer overflow flaw was found in 389 Directory Server (389-ds-base). The get_ruvelement_from_berval() function in repl5_ruv.c copies digit characters from a network-supplied RUV berval into a fixed 16-byte stack buffer without bounds checking. A remo…
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Medium 5.9
389-ds-base: 389-ds-base: null pointer dereference in deref control plugin ber parser
A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.
References
-
report
https://access.redhat.com/security/cve/CVE-2026-11770
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report
https://access.redhat.com/security/cve/CVE-2026-11788
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report
https://access.redhat.com/security/cve/CVE-2026-15722
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report
https://bugzilla.redhat.com/2484802
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report
https://bugzilla.redhat.com/2485423
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report
https://bugzilla.redhat.com/2499961
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advisory
https://errata.almalinux.org/8/ALSA-2026-55530.html