FKIE_CVE-2026-35549

Vulnerability from fkie_nvd - Published: 2026-04-03 05:16 - Updated: 2026-06-02 17:44
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
cve@mitre.orghttps://jira.mariadb.org/browse/MDEV-38365Issue Tracking
Impacted products
Vendor Product Version
mariadb mariadb *
mariadb mariadb *
mariadb mariadb *
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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6EB4F0E7-F268-4089-9341-6C6742C0CDA3",
              "versionEndExcluding": "11.4.10",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2834AA4-7D03-4C21-9220-DDCB4505E9BF",
              "versionEndExcluding": "11.8.6",
              "versionStartIncluding": "11.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DD4C7FF-D8E7-458C-8A4C-BB9CE704BF90",
              "versionEndExcluding": "12.2.2",
              "versionStartIncluding": "12.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-35549",
  "lastModified": "2026-06-02T17:44:27.370",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-03T05:16:23.160",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://jira.mariadb.org/browse/MDEV-38365"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-789"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.