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CVE-2026-54599— Wallos: OIDC state parameter never validated — login CSRF / account takeover

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.

翻译结果： Wallos 是一款开源的、可自托管的个人订阅追踪工具。在 4.9.4 版本之前， 会生成并将会话值存入 ，但 在处理 OIDC 回调时，并未将接收到的 state 参数与会话中存储的值进行比对。攻击者可以诱导受害者访问一个构造好的 URL，导致 Wallos 交换攻击者的授权码（authorization code），从而将受害者登录到攻击者的账户中。该问题已在 4.9.4 版本中修复。

CVSS 7.5 · High
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I. Basic Information for CVE-2026-54599

Vulnerability Information
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Vulnerability Title
Wallos: OIDC state parameter never validated — login CSRF / account takeover
Source: CVE Program / CVE List V5
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, login.php generates an OIDC state nonce stored in $_SESSION['oidc_state'], but checksession.php dispatches the OIDC callback without comparing the incoming state against the session value. An attacker can trick a victim into visiting a crafted URL, causing Wallos to exchange the attacker's authorization code and log the victim into the attacker's account. This issue has been patched in version 4.9.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ellite Wallos < 4.9.4 -

II. Public POCs for CVE-2026-54599

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III. Intelligence Information for CVE-2026-54599

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Other References for CVE-2026-54599 (2)

Same Patch Batch · ellite · 2026-08-31 · 9 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-2026-61641 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-2026-50199 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-352

V. Comments for CVE-2026-54599

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