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PYSEC-2026-2405 Bunsink has an SSRF bypass in `validate_webhook_url`

🗓️ 13 Jul 2026 15:15:41Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 3 Views

Summary Bugsink’s webhook URL validation in versions 2.1.2 and earlier could be (partially) bypassed because of a mismatch in URL parsing. In some malformed URLs, Python’s standard URL parser (urllib) and the HTTP client stack (requests / urllib3)...

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13 Jul 2026 16:31Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.14.3
EPSS0.00286
3