๐Ÿ›ก๏ธ CVE-2026-27854
๐ŸŸก CVSS 4.8 โ€” Medium โœ… No Known Exploit CWE-416 NVD
4.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.

Details

Severity MEDIUM
CVSS Score 4.8
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE CWE-416
Public Exploit โœ… No
Source NVD
Published 2026-03-31
Updated 2026-06-02
Modified 2026-04-14
Fix URL N/A

Affected Packages

Software From version Fixed in
dnsdist 2.0.0 2.0.3

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