🛡️ CVE-2026-33407 — wallos

🔴 CVSS 9.1 — Critical ⚠️ Exploit Public CWE-918 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, Wallos endpoints/logos/search.php accepts HTTP_PROXY and HTTPS_PROXY environment variables without validation, enabling SSRF via proxy hijacking. The server performs DNS resolution on user-supplied search terms, which can be controlled by attackers to trigger outbound requests to arbitrary domains. This issue has been patched in version 4.7.0.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability high.

Weakness class

CVE-2026-33407 is classified as CWE-918: Server-Side Request Forgery (SSRF). The server fetches a URL supplied by the caller, which can be pointed at internal systems it alone can reach.

Affected software

CVE-2026-33407 is recorded against 1 package.

  • wallos (fixed in 4.7.0)

Timeline and source

Published on 24 March 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE CWE-918
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-24
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
wallos — 4.7.0

Similar Threats

Exploit Protection

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CVE-2026-33407 carries CVSS 9.1 Critical rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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