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Vulnerability record · CVE-2026-41688 · published 7 May 2026

CVE-2026-41688: Server-side request forgery (SSRF) vulnerability

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.

7.7 CVSS 3.1 High EPSS 0.39% · top 70.1% CWE-918 · Server-side request forgery (SSRF) Deferred
7.7CVSS 3.1 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef
https://github.com/ellite/Wallos/security/advisories/GHSA-h4g7-xv3v-q73g

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Source: NIST National Vulnerability Database (record CVE-2026-41688), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.