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CVE-2026-41689

Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to allowlisted internal services

Published: May 7, 2026Updated: May 7, 2026 Sources: CVE List NVDCWE-863
NVD MITRE
6.0CVSSMEDIUM
EPSS Score
0.2%
Top 92.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:CC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-863CWE-918

Affected Products

Wallosellite
On-prem
Networking Infrastructure / network-management
elliteNetworking Infrastructureaka wallos

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

3 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/ellite/Wallos/security/advisories/GHSA-jx6w-832g-42wv
github.com

Timeline

Published
May 7, 2026
Last Updated
May 7, 2026

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