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CVE-2026-54600— Wallos: Unauthenticated database replacement via import endpoint on fresh install

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： Wallos 是一个开源、可自托管的个人订阅管理工具。在 4.9.4 版本之前， 端点没有身份验证。唯一的防护措施是基于用户表行数的检查——如果用户数为零（即全新或未配置的实例），未经认证的攻撃者可以替换整个数据库。该问题已在 4.9.4 版本中修复。

CVSS 8.2 · High
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I. Basic Information for CVE-2026-54600

Vulnerability Information
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Vulnerability Title
Wallos: Unauthenticated database replacement via import endpoint on fresh install
Source: CVE Program / CVE List V5
Vulnerability Description
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, endpoints/db/import.php has no authentication. The only guard is a user-table row count — if zero (fresh/unconfigured install), an unauthenticated attacker can replace the entire database. 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:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ellite Wallos < 4.9.4 -

II. Public POCs for CVE-2026-54600

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III. Intelligence Information for CVE-2026-54600

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Other References for CVE-2026-54600 (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-2026-61638 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-287

V. Comments for CVE-2026-54600

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