CVE-2026-35549 — Memory Allocation with Excessive Size Value in Mariadb

CWE-789 — Memory Allocation with Excessive Size ValueCWE-770 — Allocation of Resources Without Limits or Throttling14 documents9 sources
Severity
6.5MEDIUMNVD
EPSS
0.0%
top 85.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mariadb
Timeline
PublishedApr 3
Latest updateApr 6

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶CVEListV5mariadb/mariadb11.5.0 — 11.8.6+2
▶Debianmariadb/mariadb< 1:11.8.6-0+deb13u1+1

🔴Vulnerability Details

3
GHSA
GHSA-3xgj-m9hf-j98g: An issue was discovered in MariaDB Server before 11↗2026-04-03
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CVEList
CVE-2026-35549: An issue was discovered in MariaDB Server before 11↗2026-04-03
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OSV
CVE-2026-35549: An issue was discovered in MariaDB Server before 11↗2026-04-03
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📋Vendor Advisories

3
Red Hat
MariaDB Server: MariaDB Server: Denial of Service via large packet with caching_sha2_password authentication plugin↗2026-04-03
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Microsoft
CVE-2026-35549: Mariner: Mariner mitre: mitre Customer Action Required: Yes↗2026-04-02
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Debian
CVE-2026-35549: mariadb - An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x ...↗2026
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🕵️Threat Intelligence

4
Wiz
CVE-2026-3494 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2026-35549 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2025-13699 Impact, Exploitability, and Mitigation Steps | Wiz↗
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Wiz
CVE-2026-32710 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

3
Bugzilla
CVE-2026-35549 mariadb11.8: MariaDB Server: Denial of Service via large packet with caching_sha2_password authentication plugin [fedora-all]↗2026-04-06
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Bugzilla
CVE-2026-35549 mariadb10.11: MariaDB Server: Denial of Service via large packet with caching_sha2_password authentication plugin [fedora-all]↗2026-04-06
▶
Bugzilla
CVE-2026-35549 MariaDB Server: MariaDB Server: Denial of Service via large packet with caching_sha2_password authentication plugin↗2026-04-03
▶