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CVE-2026-23964 Mastodon has insufficient access control to push notification settings

🗓️ 22 Jan 2026 01:55:29Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 27 Views

Mastodon insecure access control lets users modify others push subscriptions and disrupt alerts.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-23964
22 Jan 202601:55
attackerkb
CNNVD
Mastodon security vulnerabilities
22 Jan 202600:00
cnnvd
CVE
CVE-2026-23964
22 Jan 202601:55
cve
EUVD
EUVD-2026-4210
22 Jan 202601:55
euvd
NVD
CVE-2026-23964
22 Jan 202603:15
nvd
OSV
BIT-MASTODON-2026-23964 Mastodon has insufficient access control to push notification settings
31 Jan 202608:43
osv
OSV
CVE-2026-23964 Mastodon has insufficient access control to push notification settings
22 Jan 202601:55
osv
Positive Technologies
PT-2026-3902
22 Jan 202600:00
ptsecurity
RedhatCVE
CVE-2026-23964
23 Jan 202606:19
redhatcve
Vulnrichment
CVE-2026-23964 Mastodon has insufficient access control to push notification settings
22 Jan 202601:55
vulnrichment
Rows per page
[
  {
    "vendor": "mastodon",
    "product": "mastodon",
    "versions": [
      {
        "version": "< 4.3.18",
        "status": "affected"
      },
      {
        "version": ">= 4.4.0, < 4.4.12",
        "status": "affected"
      },
      {
        "version": ">= 4.5.0, < 4.5.5",
        "status": "affected"
      }
    ]
  }
]

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