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EUVD-2026-39055

🗓️ 24 Jun 2026 19:41:21Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 3 Views

Mastodon DNS trickery may reach private addresses via mapped IPv6 on older Ruby; fixed in 4.5.10, 4.4.17, 4.3.23.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-47389
24 Jun 202619:41
attackerkb
CVE
CVE-2026-47389
24 Jun 202619:41
cve
Cvelist
CVE-2026-47389 Mastodon: SSRF protection bypass on older Ruby versions
24 Jun 202619:41
cvelist
NVD
CVE-2026-47389
24 Jun 202620:16
nvd
Positive Technologies
PT-2026-52079
24 Jun 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "2c7257d0-deec-3116-aa3c-b5a9a1fde6ed",
        "vendor": {
          "name": "mastodon"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "8f0e85fa-bc12-3325-a108-8f5b4adbc5fc",
        "product": {
          "name": "mastodon",
          "vendor": {
            "name": "mastodon"
          }
        },
        "product_version": "4.5.0-beta.1, < 4.5.10"
      }
    ]
  }
]

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24 Jun 2026 19:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.18.6
EPSS0.00054
3