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EUVD-2026-27838

🗓️ 06 May 2026 18:30:30Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 2 Views

The MongoDB C Driver Cyrus SASL integration performs unsafe username canonicalization, causing a heap overflow from untrusted URI username with authentication mechanism.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-6691
6 May 202615:08
attackerkb
Circl
CVE-2026-6691
6 May 202617:01
circl
CNNVD
MongoDB C Driver 安全漏洞
6 May 202600:00
cnnvd
CVE
CVE-2026-6691
6 May 202615:08
cve
Cvelist
CVE-2026-6691 MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow
6 May 202615:08
cvelist
Debian CVE
CVE-2026-6691
6 May 202615:08
debiancve
MongoDB
MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow
6 May 202615:08
mongodb
NVD
CVE-2026-6691
6 May 202616:16
nvd
OSV
DEBIAN-CVE-2026-6691
6 May 202616:16
osv
OSV
UBUNTU-CVE-2026-6691
6 May 202616:16
osv
Rows per page
[
  {
    "enisaIdVendor": [
      {
        "id": "fb7accd0-c1f3-3ed3-b010-4fbe20cf2c5f",
        "vendor": {
          "name": "MongoDB Inc."
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "f64e51a4-30cd-3d1f-ae8a-b9702afe7ae3",
        "product": {
          "name": "MongoDB C Driver"
        },
        "product_version": "2.1.0 ≤2.1.2"
      }
    ]
  }
]

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06 May 2026 18:30Current
5.9Medium risk
Vulners AI Score5.9
CVSS 48.6
CVSS 3.17.8
EPSS0.00126
SSVC
2