CVE-2026-41688— Incomplete fix for CVE-2026-33399: SSRF in Wallos
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I. Basic Information for CVE-2026-41688
Vulnerability Information
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Vulnerability Title
Incomplete fix for CVE-2026-33399: SSRF in Wallos
Source: NVD (National Vulnerability Database)
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. In versions 4.8.4 and prior, the incomplete SSRF fix in Wallos validates webhook URLs via gethostbyname() but passes the original hostname to cURL without CURLOPT_RESOLVE pinning on 10 of 11 outbound HTTP endpoints, leaving a DNS rebinding TOCTOU window. At time of publication, there are no publicly available patches.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Wallos 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wallos是Miguel Ribeiro个人开发者的一个开源个人订阅跟踪器。 Wallos 4.8.4及之前版本存在代码问题漏洞，该漏洞源于SSRF修复不完整，通过gethostbyname验证Webhook URL但未使用CURLOPT_RESOLVE固定，存在DNS重绑定TOCTOU窗口。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-41688
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 8320 chars
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III. Intelligence Information for CVE-2026-41688
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Same Patch Batch · ellite · 2026-05-07 · 3 CVEs total
| CVE-2026-41689 | 6.0 MEDIUM | Wallos: Shared local webhook allowlist lets low-privilege users send arbitrary requests to |
| CVE-2026-41687 | 4.3 MEDIUM | Wallos: SSRF CGNAT Bypass in subscription/payments Logo URL — is_cgnat_ip() Not Used in In |
IV. Related Vulnerabilities
Same product: Wallos
- CVE-2026-41689
Wallos: Shared local webhook allowlist lets low-privilege us - CVE-2026-41687
Wallos: SSRF CGNAT Bypass in subscription/payments Logo URL - CVE-2026-33417
Wallos: Password Reset Tokens Never Expire - CVE-2026-33401
Wallos: Incomplete fix for CVE-2026-30840 - SSRF in AI and n - CVE-2026-33400
Wallos: Stored cross-site scripting (XSS) vulnerability in t
Same vendor: ellite
- CVE-2026-41689
Wallos: Shared local webhook allowlist lets low-privilege us - CVE-2026-41687
Wallos: SSRF CGNAT Bypass in subscription/payments Logo URL - CVE-2026-33417
Wallos: Password Reset Tokens Never Expire - CVE-2026-33401
Wallos: Incomplete fix for CVE-2026-30840 - SSRF in AI and n - CVE-2026-33400
Wallos: Stored cross-site scripting (XSS) vulnerability in t
Same weakness: CWE-918
- CVE-2026-44428
MCP Registry: GitHub OIDC tokens replayable across registry - CVE-2026-44430
MCP Registry: Unauthenticated SSRF: HTTP namespace verificat - CVE-2026-44661
python-utcp: SSRF via attacker-controlled OpenAPI servers[0] - CVE-2026-44589
nuxt-og-image SSRF — bypass of GHSA-pqhr-mp3f-hrpp / v6.2.5 - CVE-2026-44515
Nextcloud News: Authenticated blind SSRF via feed URL
V. Comments for CVE-2026-41688
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