Incomplete fix for CVE-2026-33399: SSRF in Wallos
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Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname() but passes the original hostname to cURL without CURLOPT_RESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS rebinding TOCTOU window. At time of publication, there are no publicly available patches.
No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
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