EUVD-2026-18595
GHSA-3xgj-m9hf-j98g
6.5
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Lifecycle Timeline
3
EUVD ID Assigned
Apr 03, 2026 - 05:15 euvd
EUVD-2026-18595
Analysis Generated
Apr 03, 2026 - 05:15 vuln.today
CVE Published
Apr 03, 2026 - 05:00 nvd
MEDIUM 6.5
Tags
Description
An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x before 11.8.6, and 12.x before 12.2.2. If the caching_sha2_password authentication plugin is installed, and some user accounts are configured to use it, a large packet can crash the server because sha256_crypt_r uses alloca.
Analysis
Denial of service in MariaDB Server through large packet crashes when the caching_sha2_password authentication plugin is enabled and accounts use it, due to unbounded stack allocation in sha256_crypt_r. Authenticated remote attackers can crash the server by sending a crafted large authentication packet. …
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Priority Score
33
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0
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External POC / Exploit Code
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