A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers.
This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.
Users are recommended to upgrade to version 2.1.9, which fixes the issue.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Directory LDAP API | unaffected |
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No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Fri, 02 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 |
Fri, 02 Oct 2026 10:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Asymmetric Resource Consumption vulnerability in Apache Directory LDAP API. A LDAP server using the LDAP API (like Apache DS) may consume 100% of a CPU core indefinitely when processing some badly crafted Telephone Numbers. This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9. Users are recommended to upgrade to version 2.1.9, which fixes the issue. | |
| Title | Apache Directory LDAP API: Denial of service via crafted telephone number values | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-10-02T10:09:51.901Z
Reserved: 2026-10-01T13:23:38.750Z
Link: CVE-2026-103885
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-02T10:17:06.833
Modified: 2026-10-02T10:17:06.833
Link: CVE-2026-103885
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-10-02T11:30:18Z