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CVE-2026-41689— Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to allowlisted internal services

Quick assessment

Affected
ellite Wallos
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wallos是Miguel Ribeiro个人开发者的一个开源个人订阅跟踪器。 Wallos 4.8.4及之前版本存在安全漏洞，该漏洞源于Webhook通知功能重用管理员配置的本地目标白名单，可能导致普通用户控制Webhook URL、标头和主体，向白名单内部自动化服务发送服务器端请求。

CVSS 6.0 · Medium EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
ellite Wallos <= 4.8.4 affected
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I. Basic Information for CVE-2026-41689

Vulnerability Information
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Vulnerability Title
Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to allowlisted internal services
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Wallos 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wallos是Miguel Ribeiro个人开发者的一个开源个人订阅跟踪器。 Wallos 4.8.4及之前版本存在安全漏洞，该漏洞源于Webhook通知功能重用管理员配置的本地目标白名单，可能导致普通用户控制Webhook URL、标头和主体，向白名单内部自动化服务发送服务器端请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ellite Wallos <= 4.8.4 -

II. Public POCs for CVE-2026-41689

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III. Intelligence Information for CVE-2026-41689

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Vendor Advisories for CVE-2026-41689 (1)

Same Patch Batch · ellite · 2026-05-07 · 3 CVEs total

CVE-2026-41688 7.7 HIGH Incomplete fix for CVE-2026-33399: SSRF in Wallos
CVE-2026-41687 4.3 MEDIUM Wallos: SSRF CGNAT Bypass in subscription/payments Logo URL — is_cgnat_ip() Not Used in In

IV. Related Vulnerabilities

Same product: Wallos
Same vendor: ellite
Same weakness: CWE-863

V. Comments for CVE-2026-41689

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