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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.

PUBLISHED Reserved 2026-04-22 | Published 2026-05-07 | Updated 2026-05-07 | Assigner GitHub_M




HIGH: 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

<= 4.8.4
affected

References

github.com/...Wallos/security/advisories/GHSA-h4g7-xv3v-q73g

github.com/...ommit/e87387f0ebb540cd33e6dfda7181db9db650ecef

cve.org (CVE-2026-41688)

nvd.nist.gov (CVE-2026-41688)

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