CVE-2026-41689
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedWallos 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceWallos versions 4.8.4 and prior have an authorization bypass in the webhook notification feature where the administrator-configured local-target allowlist is reused for all logged-in users. Any authenticated user can fully control the webhook URL, headers, and body, enabling them to send server-side requests from the Wallos application to internal automation services that are allowlisted by the administrator. This creates a SSRF-like vector to internal services, potentially leading to adjacent-service RCE if those services expose deployment or execution APIs.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Determine Wallos installation versionLocate the Wallos application and identify its version number (typically found in about page, composer.json, or version file within the application directory)Affected if Installed version is 4.8.4 or prior
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Verify webhook notification feature existsAccess the Wallos administrative interface and navigate to notification or webhook settings to confirm the feature is present and configurableAffected if Webhook notification feature is present and accessible to non-administrator users
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Check user role permissions for webhooksLog in as a non-administrator user account and attempt to access or configure webhook notifications; verify if the admin-defined allowlist is accessible or applied to your sessionAffected if Non-administrator users can access webhook configuration or trigger webhooks using admin-defined allowlisted targets
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Inspect allowlist configurationExamine the webhook settings where administrators define local-target allowlists; determine if this allowlist applies globally to all authenticated users regardless of roleAffected if The allowlist is shared across all users without per-user authorization enforcement
A user is affected if running Wallos version 4.8.4 or prior AND the webhook notification feature allows any authenticated user to leverage the administrator-configured allowlist for targeting internal services.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataRestrict webhook functionality to administrator accounts only, or implement per-user authorization checks that prevent normal users from targeting internal/allowlisted addresses regardless of user-controllable URL, headers, and body parameters.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-41689 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-41689 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data