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CVE-2026-61641— Wallos: OIDC account takeover via email-based account linking without `email_verified` check

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.

Miguel Ribeiro Wallos是Miguel Ribeiro个人开发者开源的一个开源个人订阅跟踪器。 Miguel Ribeiro Wallos 4.0.0至4.9.6之前版本存在授权问题漏洞，该漏洞源于OIDC登录时仅通过匹配电子邮件声明关联本地账户且未验证email_verified，可能导致攻击者以管理员身份登录并实现完整账户接管。

CVSS 8.1 · High EPSS 0.53% · P44

Possible ATT&CK Techniques 2 AI

T1083 · File and Directory Discovery T1079

Affected Version Matrix 1

VendorProduct Version RangeStatus
ellite Wallos >= 4.0.0, < 4.9.6 affected
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I. Basic Information for CVE-2026-61641

Vulnerability Information
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Vulnerability Title
Wallos: OIDC account takeover via email-based account linking without `email_verified` check
Source: CVE Program / CVE List V5
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. From version 4.0.0 to before version 4.9.6, Wallos's OIDC login links an incoming OIDC identity to an existing local account by matching the email claim alone, without verifying that the IdP marked that email as verified (email_verified). When Wallos is configured against an IdP that lets a user present an arbitrary or unverified email (multi-tenant IdPs, IdPs with open self-registration, or any IdP the attacker partly controls), an attacker with no Wallos account can authenticate with the admin's email and be logged in as the admin — full account takeover, no password needed. This issue has been patched in version 4.9.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Miguel Ribeiro Wallos 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Miguel Ribeiro Wallos是Miguel Ribeiro个人开发者开源的一个开源个人订阅跟踪器。 Miguel Ribeiro Wallos 4.0.0至4.9.6之前版本存在授权问题漏洞，该漏洞源于OIDC登录时仅通过匹配电子邮件声明关联本地账户且未验证email_verified，可能导致攻击者以管理员身份登录并实现完整账户接管。
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 >= 4.0.0, < 4.9.6 -

II. Public POCs for CVE-2026-61641

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III. Intelligence Information for CVE-2026-61641

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Patches & Fixes for CVE-2026-61641 (1)

Vendor Advisories for CVE-2026-61641 (1)

Vendor Pages for CVE-2026-61641 (1)

Same Patch Batch · ellite · 2026-08-31 · 13 CVEs total

CVE-2026-61640 8.5 HIGH Wallos: SSRF via OIDC Token/UserInfo URL Configuration
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-2026-77348 8.2 HIGH Wallos incomplete fix for CVE-2026-33407: unauthenticated httpoxy SSRF still reachable via
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-2026-77353 4.6 MEDIUM Wallos: iCalendar Injection via CRLF in Subscription Name/Notes Export
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
CVE-2026-77352 4.3 MEDIUM Wallos: Authenticated SSRF via per-user SMTP notification host (low-privilege user)
CVE-2026-77351 3.5 LOW Wallos: SSRF via Unvalidated User-Level SMTP Host in Email Notification Settings

IV. Related Vulnerabilities

Same product: Wallos
Same vendor: ellite
Same weakness: CWE-287

V. Comments for CVE-2026-61641

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