Vulnerability · Published Feb 21, 2026 · Assigned by GitHub_M

CVE-2026-27479Wallos: SSRF via Redirect Bypass in Logo/Icon URL Fetch

High 7.7

In plain English

A high-severity server-side request forgery in Wallos from ellite. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
ellite	Wallos	< 4.6.1

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://github.com/ellite/Wallos/security/advisories/GHSA-fgmf-7g5v-jmjg x_refsource_CONFIRM
https://github.com/ellite/Wallos/commit/76a53df9cb4658123b8f0b7cf1826f1ba7d1c960 x_refsource_MISC
https://github.com/ellite/Wallos/releases/tag/v4.6.1 x_refsource_MISC