Apache Directory LDAP API: A unbound client can send a deeply nested search filter that overflows the stack in the server's decoder

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

2 Oct 2026 09:48:05 UTC

Source modified

2 Oct 2026 21:07:19 UTC

Observed here

23 Oct 2026 15:48:27 UTC

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