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CVE-2026-33399— Wallos: SSRF Bypass - Incomplete Fix for CVE-2026-30839/30840

Quick assessment

Affected
ellite Wallos
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wallos是Miguel Ribeiro个人开发者的一个开源个人订阅跟踪器。 Wallos 4.7.0之前版本存在代码问题漏洞，该漏洞源于SSRF修复不完整，save*端点未应用validate_webhook_url_for_ssrf()保护，可能导致经过身份验证的用户将内部或私有IP地址保存为通知URL，并在cron作业执行时向该内部IP发送请求。

CVSS 7.7 · High EPSS 0.28% · P21

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-33399

Vulnerability Information
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Vulnerability Title
Wallos: SSRF Bypass - Incomplete Fix for CVE-2026-30839/30840
Source: CVE Program / CVE List V5
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.7.0, the SSRF fix applied in version 4.6.2 for CVE-2026-30839 and CVE-2026-30840 is incomplete. The validate_webhook_url_for_ssrf() protection was added to the test* notification endpoints but not to the corresponding save* endpoints. An authenticated user can save an internal/private IP address as a notification URL, and when the cron job sendnotifications.php executes, the request is sent to the internal IP without any SSRF validation. This issue has been patched in version 4.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
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 4.7.0之前版本存在代码问题漏洞，该漏洞源于SSRF修复不完整，save*端点未应用validate_webhook_url_for_ssrf()保护，可能导致经过身份验证的用户将内部或私有IP地址保存为通知URL，并在cron作业执行时向该内部IP发送请求。
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

Vendor Product Affected Versions CPE Subscribe
ellite Wallos < 4.7.0 -

II. Public POCs for CVE-2026-33399

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6776 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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III. Intelligence Information for CVE-2026-33399

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Patches & Fixes for CVE-2026-33399 (1)

Vendor Advisories for CVE-2026-33399 (1)

Same Patch Batch · ellite · 2026-03-24 · 5 CVEs total

CVE-2026-33417 6.5 MEDIUM Wallos: Password Reset Tokens Never Expire
CVE-2026-33400 5.4 MEDIUM Wallos: Stored cross-site scripting (XSS) vulnerability in the payment method rename endpo
CVE-2026-33401 Wallos: Incomplete fix for CVE-2026-30840 - SSRF in AI and notification endpoints bypass s
CVE-2026-33407 Wallos: SSRF via HTTP Proxy Environment Variable

IV. Related Vulnerabilities

Same product: Wallos
Same vendor: ellite
Same weakness: CWE-918

V. Comments for CVE-2026-33399

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