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MariaDB CVE-2026-35549

| EUVD-2026-18595 MEDIUM
Memory Allocation with Excessive Size Value (CWE-789)
2026-04-03 mitre GHSA-3xgj-m9hf-j98g
Denial Of Service MariaDB
6.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
6.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

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

4
Patch available
Apr 16, 2026 - 05:29 EUVD
11.4.10,11.8.6,12.2.2
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

DescriptionCVE.org

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.

AnalysisAI

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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Vulnerability AssessmentAI

Risk Assessment CVSS score of 6.5 with vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H reflects a network-reachable denial-of-service requiring low privilege authentication and no user interaction, causing availability impact only. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with valid database credentials connects to the MariaDB server and sends a malformed or oversized authentication packet to the caching_sha2_password plugin during the authentication handshake. The sha256_crypt_r function processes the packet size without bounds checking, calling alloca() to allocate a stack buffer proportional to the packet size. …
Remediation Vendor-released patches are available: upgrade to MariaDB 11.4.10, 11.8.6, or 12.2.2 depending on your current version branch. … Detailed patch versions, workarounds, and compensating controls in full report.
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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
SUSE Linux Enterprise Module for Server Applications 15 SP7 Fixed
SUSE Linux Enterprise Server 15 SP7 Fixed
SUSE Linux Enterprise Server 16.1 Fixed

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CVE-2026-35549 vulnerability details – vuln.today
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