Threats Tagged 'cve-2026-76838'
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Threats Tagged 'cve-2026-76838'
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CVE-2026-76838 is a Server-Side Request Forgery (SSRF) vulnerability in HiEventsDev's Hi.Events product. The vulnerability arises because webhook destination URLs are only validated at registration, not at dispatch. The validation uses gethostbyname() to reject private and reserved IP ranges, but this check can be bypassed by redirects to internal addresses or by changing DNS records after registration. The server follows redirects by default and returns the internal response body to the requester, exposing potentially sensitive internal services. Version 1.11.1-beta addresses these issues by revalidating URLs at dispatch, pinning validated addresses, checking each redirect hop, and decoding IPv6 transition addresses to prevent bypasses. Join the discussion | CVE Database V5 | 08/24/2026, 17:36:02 UTC Added: 08/24/2026, 17:53:07 UTC |
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