CVE-2026-11791
Medium · 5.0CVSS
5.0
EPSS
0.4%
Published
Jun 18, 2026
CISA due date
—
The record
A flaw was found in 389 Directory Server. During schema reload, the attr_syntax_swap_ht() function unconditionally frees attribute syntax information nodes, bypassing the refcount-based deferred deletion used elsewhere in the attribute syntax subsystem. If an administrator triggers schema reload while concurrent LDAP query traffic is active, worker threads may access freed memory, resulting in use-after-free or double-free and a denial of service (server crash).
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-109618 PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort… CWE-416
- CVE-2026-109619 PHP has various global state that temporarily points into request memory. CWE-416
- CVE-2026-112402 Pillow is a Python imaging library. CWE-416
- CVE-2026-112396 Pillow is a Python imaging library. CWE-416
- CVE-2025-55654 A use-after-free in the gf_filter_pid_get_packet function (filter_core/filter_pid.c) of… CWE-416
- CVE-2026-17591 A flaw was found in libarchive. CWE-416
- CVE-2026-92392 During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with… CWE-416
- CVE-2026-109268 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains a use after free… CWE-416