CVE-2026-41689 (GCVE-0-2026-41689)
Vulnerability from cvelistv5 – Published: 2026-05-07 13:53 – Updated: 2026-05-07 14:43
VLAI
EPSS
VEX
Title
Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to allowlisted internal services
Summary
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.
Severity
6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-07 14:43 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ellite/Wallos/security/advisor… | x_refsource_CONFIRM |
Impacted products
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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