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CVE-2026-47389 Mastodon: SSRF protection bypass on older Ruby versions

🗓️ 24 Jun 2026 19:41:21Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Mastodon SSRF on old Ruby via IPv4 mapped IPv6 addresses; 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
EUVD
EUVD-2026-39055
24 Jun 202619:41
euvd
NVD
CVE-2026-47389
24 Jun 202620:16
nvd
Positive Technologies
PT-2026-52079
24 Jun 202600:00
ptsecurity
[
  {
    "vendor": "mastodon",
    "product": "mastodon",
    "versions": [
      {
        "version": ">= 4.5.0-beta.1, < 4.5.10",
        "status": "affected"
      }
    ]
  }
]

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