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CVE-2026-34590

🗓️ 02 Apr 2026 17:26:58Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 21 Views🌐 WEB

Postiz allowed blind SSRF via webhook creation due to missing safe URL validation; fixed in 2.21.4.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-34590
2 Apr 202617:26
attackerkb
cnnvd
CNNVD
Gitroom Postiz 代码问题漏洞
2 Apr 202600:00
cnnvd
cvelist
Cvelist
CVE-2026-34590 Postiz: SSRF via Webhook Creation Endpoint Missing URL Safety Validation
2 Apr 202617:26
cvelist
euvd
EUVD
EUVD-2026-18452
2 Apr 202617:26
euvd
nvd
NVD
CVE-2026-34590
2 Apr 202618:16
nvd
ptsecurity
Positive Technologies
PT-2026-29855
2 Apr 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-34590
3 Apr 202623:02
redhatcve
vulnrichment
Vulnrichment
CVE-2026-34590 Postiz: SSRF via Webhook Creation Endpoint Missing URL Safety Validation
2 Apr 202617:26
vulnrichment
NVD
Vulners
Node
gitroompostizRange<2.21.4
[
  {
    "vendor": "gitroomhq",
    "product": "postiz-app",
    "versions": [
      {
        "version": "< 2.21.4",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
urlrequest body/webhooks/POST /webhooks/ validates only URL format, allowing internal/private addresses; missing IsSafeWebhookUrl validation enabling blind SSRF when orchestrator fetches stored webhook URL.CWE-918

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24 Jul 2026 21:10Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.4
EPSS0.00226
SSVC
21