How severe is CVE-2026-35549?

CVE-2026-35549 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-35549 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35549?

CVE-2026-35549 affects Mariadb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35549?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-35549 have an EU (EUVD) identifier?

Yes. CVE-2026-35549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18595.

When was CVE-2026-35549 published?

CVE-2026-35549 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-35549

CVE-2026-35549 is a medium-severity vulnerability in Mariadb with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-789.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18595
Weakness: CWE-789
Affected product: Mariadb
Published: 2026-04-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-35549?: 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.
How severe is CVE-2026-35549?: CVE-2026-35549 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-35549 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35549?: CVE-2026-35549 affects Mariadb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35549?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35549 have an EU (EUVD) identifier?: Yes. CVE-2026-35549 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18595.
When was CVE-2026-35549 published?: CVE-2026-35549 was published on 2026-04-03 and last updated on 2026-06-17.

References

https://jira.mariadb.org/browse/MDEV-38365

Affected products (1)

cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*

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