What is the CVSS score of CVE-2026-30840?

CVE-2026-30840 has a CVSS 3.0 base score of 8.8 (High). CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Wallos are affected by CVE-2026-30840?

Organizations running Wallos subscription tracker versions prior to 4.6.2 face a server-side request forgery (SSRF) vulnerability that could allow attackers to access internal systems and sensitive…. A patch is available.

Is there a public PoC exploit available for CVE-2026-30840?

Yes, a public proof-of-concept exploit is available for CVE-2026-30840. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-30840?

Within 24 hours: Inventory all Wallos deployments and confirm versions in use. Within 7 days: Apply vendor patch to upgrade all instances to version 4.6.2 or later, and validate successful deployment. Within 30 days: Conduct security review of notification tester functionality and implement network segmentation controls to limit SSRF impact scope.

Wallos CVE-2026-30840

HIGH

Improper Certificate Validation (CWE-295)

2026-03-07 security-advisories@github.com

SSRF Wallos Wallosapp

8.8

CVSS 3.0 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 11, 2026 - 18:32 vuln.today

Public exploit code

Patch released

Mar 11, 2026 - 18:32 nvd

Patch available

CVE Published

Mar 07, 2026 - 06:16 nvd

HIGH 8.8

DescriptionGitHub Advisory

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.

AnalysisAI

Server-side request forgery in Wallos versions before 4.6.2 allows authenticated attackers to conduct arbitrary network requests through the notification tester functionality. An attacker with user privileges can exploit this to access internal services, retrieve sensitive data, or interact with backend systems on behalf of the server. Public exploit code exists for this vulnerability, though a patch is available in version 4.6.2.

Technical ContextAI

Classified as CWE-295 (Improper Certificate Validation). Affects Wallos. Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.