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2 vulnerabilities found for OpenLDAP by OpenLDAP Foundation
CVE-2026-22185 (GCVE-0-2026-22185)
Vulnerability from cvelistv5 – Published: 2026-01-07 20:26 – Updated: 2026-05-25 23:41
VLAI
Title
OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://seclists.org/fulldisclosure/2026/Jan/5 | technical-descriptionexploit |
| https://seclists.org/fulldisclosure/2026/Jan/8 | technical-descriptionexploit |
| https://www.openldap.org/ | product |
| https://www.vulncheck.com/advisories/openldap-lmd… | third-party-advisory |
| https://bugs.openldap.org/show_bug.cgi?id=10421 | issue-trackingpatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenLDAP Foundation | OpenLDAP |
Affected:
0.9.14 , < 0.9.34
(semver)
|
Credits
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CVE-2026-22185 (GCVE-0-2026-22185)
Vulnerability from nvd – Published: 2026-01-07 20:26 – Updated: 2026-05-25 23:41
VLAI
Title
OpenLDAP LMDB mdb_load Heap Buffer Underflow in readline()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://seclists.org/fulldisclosure/2026/Jan/5 | technical-descriptionexploit |
| https://seclists.org/fulldisclosure/2026/Jan/8 | technical-descriptionexploit |
| https://www.openldap.org/ | product |
| https://www.vulncheck.com/advisories/openldap-lmd… | third-party-advisory |
| https://bugs.openldap.org/show_bug.cgi?id=10421 | issue-trackingpatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OpenLDAP Foundation | OpenLDAP |
Affected:
0.9.14 , < 0.9.34
(semver)
|
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