CVE-2026-27479

HIGH EPSS 22.4%
Published Feb 21, 20264mo ago · Modified Jun 17, 20262w ago
7.7 CVSS 3.1
High
Find Similar
Published Feb 21, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.7
Exploitability
3.1
Impact
4.0
Vector string
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

Threat Intelligence

EPSS Exploit Probability
22.4% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

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

Affected Products 1

VendorProductVersionRange
wallosappwallos* <4.6.1

References 3

  • github.com https://github.com/ellite/Wallos/commit/76a53df9cb4658123b8f0b7cf1826f1ba7d1c960
    Patch
  • github.com https://github.com/ellite/Wallos/releases/tag/v4.6.1
    ProductRelease Notes
  • github.com https://github.com/ellite/Wallos/security/advisories/GHSA-fgmf-7g5v-jmjg
    ExploitMitigationVendor Advisory

Remediation

  • github.com https://github.com/ellite/Wallos/commit/76a53df9cb4658123b8f0b7cf1826f1ba7d1c960
    Patch