by Kastro
Paper/Archive/CVE-2026-33407

CVE-2026-33407

ellite Wallos — Wallos: SSRF via HTTP Proxy Environment Variable

EPSS 0.4%public exploitCVSS 9.1
critical.is priorityof 100
44
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 32.4.324 × 206.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Wallos< 4.7.0–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GitHub_M (CNA)8.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

refgithub.com/ellite/Wallos/security/advisories/GHSA-hhjq-82f8-m6rcrefgithub.com/ellite/Wallos/commit/e87387f0ebb540cd33e6dfda7181db9db650ecef#diff-d77202c5d47a3d7d4586e519f6f5e256da5fb2969fa8b9c75c399b2821e9de40