Advisory severityUnratedApache Software Foundation

Advisory [CVE-2026-103552] Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder

This security Apache Software Foundation advisory covers CVE-2026-103552 affecting Apache Directory LDAP.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-103552 Source published Oct 2, 2026Source updated Oct 2, 2026

VulniPulse record published Oct 2, 2026Record updated Oct 2, 2026

CVE-2026-103552

Affected products & platforms

Apache Software FoundationUnclassified

Open source advisory

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Summary

Stack Overflow vulnerability in Apache Directory LDAP API.

Before binding, a client can send a deeply nested search filter that overflows the stack in the server's decoder.

This issue affects Apache Directory LDAP API: from 1.2.0 before 1.2.9.

Users are recommended to upgrade to version 1.2.9, which fixes the issue.

Affected versions

Apache Directory LDAP API 1.2.0 before 1.2.9

Official advisory · medium-confidence parse· fetched 4 days ago·verify at source

Fixed versions

1.2.9

Official advisory · medium-confidence parse· fetched 4 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Users are recommended to upgrade to version 1.2.9, which fixes the issue.

Official advisory · medium-confidence parse· fetched 4 days ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-103552 instead of the raw feed document.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-103552NVD CVE.org MITRE

Official resources

ASF Security — reporting & CVE process
Official documentation
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Apache project downloads (fixed releases)
Official documentation
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