Incomplete fix for CVE-2026-33399: SSRF in Wallos_CVE-2026-41688

7.7 / 10

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Description

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.

Basic Information

ID CVE-2026-41688

Source GitHub_M

Published May 7, 2026 at 13:52

Modified May 7, 2026 at 14:57

Affected Product

Vendor ellite

Product Wallos

Version <= 4.8.4

Affected Versions ellite Wallos <= 4.8.4

CWE Classification

CWE-918

References

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    "published": "2026-05-07T13:52:00.576Z",
    "modified": "2026-05-07T14:57:10.026Z",
    "type": "cve",
    "title": "Incomplete fix for CVE-2026-33399: SSRF in Wallos",
    "source": "GitHub_M",
    "references": "https://github.com/ellite/Wallos/security/advisories/GHSA-h4g7-xv3v-q73g\nhttps://github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef",
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        "score": 7.7,
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        "cvssV3": {
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