CVE-2026-103552Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder
Updated under an hour ago ()
Does this affect you?
It affects Apache Software Foundation Apache Directory LDAP API. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.34%, higher than 26% of scored CVEs.
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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.
- CVSS
- 7.3 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weakness (CWE)
- CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.34% (percentile 26)
- Assigned by
- apache
- NVD analysis
- Deferred
- Record last updated
- Oct 2, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache Directory LDAP API apache_software_foundation:apache_directory_ldap_api (from the name) | from 1.2.0 before 1.2.9 | CNA record |
References
- https://lists.apache.org/thread.html/fn3bwknn57266hx66w9vv6b4k8rfwcx7vendor-advisory
- http://www.openwall.com/lists/oss-security/2026/10/02/4
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.