What is the CVSS score of CVE-2026-27479?

CVE-2026-27479 has a CVSS 3.1 base score of 7.7 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Wallos are affected by CVE-2026-27479?

Organizations running Wallos subscription tracker versions 4.6.0 and below face a high-severity SSRF vulnerability that could allow attackers to access internal network resources and sensitive data…. A patch is available.

Is there a public PoC exploit available for CVE-2026-27479?

Yes, a public proof-of-concept exploit is available for CVE-2026-27479. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-27479?

Within 24 hours: identify all instances of Wallos in your environment and confirm versions. Within 7 days: upgrade all affected Wallos deployments to version 4.6.1 or later. Within 30 days: conduct a security review of logo/icon upload functionality across all internal applications and verify no unauthorized internal resource access occurred during the vulnerability window.

Wallos CVE-2026-27479

HIGH

Server-Side Request Forgery (SSRF) (CWE-918)

2026-02-21 security-advisories@github.com

SSRF Wallos

7.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.7 HIGH

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

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

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:04 vuln.today

PoC Detected

Feb 24, 2026 - 14:47 vuln.today

Public exploit code

Patch released

Feb 24, 2026 - 14:47 nvd

Patch available

CVE Published

Feb 21, 2026 - 09:15 nvd

HIGH 7.7

DescriptionGitHub Advisory

Wallos is an open-source, self-hostable personal subscription tracker. Versions 4.6.0 and below contain a Server-Side Request Forgery (SSRF) vulnerability in the subscription and payment logo/icon upload functionality. The application validates the IP address of the provided URL before making the request, but allows HTTP redirects (CURLOPT_FOLLOWLOCATION = true), enabling an attacker to bypass the IP validation and access internal resources, including cloud instance metadata endpoints. The getLogoFromUrl() function validates the URL by resolving the hostname and checking if the resulting IP is in a private or reserved range using FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE. However, the subsequent cURL request is configured with CURLOPT_FOLLOWLOCATION = true and CURLOPT_MAXREDIRS = 3, which means the request will follow HTTP redirects without re-validating the destination IP. This issue has been fixed in version 4.6.1.

AnalysisAI

Wallos versions 4.6.0 and below allow authenticated attackers to perform Server-Side Request Forgery attacks through the logo upload feature by exploiting HTTP redirects that bypass IP validation checks, enabling access to internal resources and cloud metadata endpoints. Public exploit code exists for this vulnerability, and an available patch should be applied immediately to prevent unauthorized disclosure of sensitive configuration and credentials.

Technical ContextAI

Classified as CWE-918 (Server-Side Request Forgery (SSRF)). Affects Wallos. Wallos is an open-source, self-hostable personal subscription tracker. Versions 4.6.0 and below contain a Server-Side Request Forgery (SSRF) vulnerability in the subscription and payment logo/icon upload functionality. The application validates the IP address of the provided URL before making the request, but allows HTTP redirects (CURLOPT_FOLLOWLOCATION = true), enabling an attacker to bypass the IP validation and access internal resources, including cloud instance metadata endpoints. The getLo