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CVE-2026-61640— Wallos: SSRF via OIDC Token/UserInfo URL Configuration

Quick assessment

Affected
ellite Wallos
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wallos 是一个开源的、可自托管的个人订阅管理工具。在 4.9.6 版本之前， 文件第 18-49 行中，由管理员配置的 OIDC 和 会直接传入 ，且没有任何 SSRF（服务器端请求伪造）过滤机制。与 Logo 和 Webhook URL 不同（后者受 函数保护），OIDC 相关 URL 绕过了所有防护措施。攻击者可由管理员将 URL 设置为 以访问云环境元数据，或用于在内网中进行横向移动（pivoting）。该问题已在 4.9.6 版本中修复。

CVSS 8.5 · High

Possible ATT&CK Techniques 1 AI

T1515
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I. Basic Information for CVE-2026-61640

Vulnerability Information
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Vulnerability Title
Wallos: SSRF via OIDC Token/UserInfo URL Configuration
Source: CVE Program / CVE List V5
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.6, Admin-configured OIDC token_url and user_info_url in includes/oidc/handle_oidc_callback.php:18-49 are used directly in curl_init() with zero SSRF filtering. Unlike logo/webhook URLs which have validate_webhook_url_for_ssrf(), OIDC URLs bypass all protections. Admin sets URL to http://169.254.169.254/latest/meta-data/ for cloud metadata access or internal network pivoting. This issue has been patched in version 4.9.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ellite Wallos < 4.9.6 -

II. Public POCs for CVE-2026-61640

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III. Intelligence Information for CVE-2026-61640

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Other References for CVE-2026-61640 (3)

Same Patch Batch · ellite · 2026-08-31 · 9 CVEs total

CVE-2026-61639 8.5 HIGH Wallos: Zip Slip path traversal in database restore writes files to webroot
CVE-2026-54600 8.2 HIGH Wallos: Unauthenticated database replacement via import endpoint on fresh install
CVE-2026-61638 8.2 HIGH Wallos: SSRF via Test Email Notification - unvalidated SMTP host/port
CVE-2026-61641 8.1 HIGH Wallos: OIDC account takeover via email-based account linking without `email_verified` che
CVE-2026-54598 7.5 HIGH Missing Authentication for Critical Function in wallos
CVE-2026-54599 7.5 HIGH Wallos: OIDC state parameter never validated — login CSRF / account takeover
CVE-2026-50199 4.3 MEDIUM Wallos: Cross-user Fixer/API Layer credential consumption in exchange-rate refresh
CVE-2026-50198 4.3 MEDIUM Wallos: Cross-user subscription cost inference via replacement_subscription_id

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-61640

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