Vulnerability · Published May 7, 2026 · Assigned by GitHub_M

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

High 7.7

In plain English

A high-severity server-side request forgery in Wallos from ellite. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.2%top 86.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
ellite	Wallos	<= 4.8.4

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

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