Vulnerability · Published May 7, 2026 · Assigned by GitHub_M
CVE-2026-41689Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to allowlisted internal services
Medium 6.0
In plain English
A medium-severity incorrect authorization 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 7% of all known vulnerabilities).
Official description
Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the webhook notification feature reuses an administrator-configured local-target allowlist for every logged-in user. Any normal user can fully control a webhook URL, headers, and body, then use Wallos to send server-side requests to allowlisted internal automation services. When such a target exposes deployment or execution APIs, this can further enable adjacent-service RCE, but that downstream result is conditional on the target service. At time of publication, there are no publicly available patches.
Affected products (as reported)
Weakness: CWE-863, CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
References
- https://github.com/ellite/Wallos/security/advisories/GHSA-jx6w-832g-42wv x_refsource_CONFIRM