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TI-2026-36958 Aliases CVE-2026-50199

Wallos: Cross-user Fixer/API Layer credential consumption in exchange-rate refresh

Priority MEDIUM 53CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.1, endpoints/currency/update_exchange.php loads the first Fixer/API Layer credential globally instead of loading the credential for the authenticated user. As a result, a normal authenticated user without their own provider key can trigger exchange-rate refreshes using another user's stored provider credential. This issue has been patched in version 4.9.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Fixed Wallos (ellite): 4.9.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
elliteWallosbefore 4.9.14.9.1Patch availableCNA
  • Wallos Vendorellite Affected before 4.9.1 Fixed in 4.9.1 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:wallosapp:wallos:*:*:*:*:*:*:*:*——ellite
  • cpe:2.3:a:wallosapp:wallos:*:*:*:*:*:*:*:* Versions — — ·ellite

Remediation

  • Fix · CNA Wallos (ellite) Fixed in 4.9.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-50199

References

Other 2

  • TI-2026-53972 Server-side request forgery in ellite Wallos CVSS 3.1HIGH 8.2
  • TI-2026-39433 Wallos: Unauthenticated database replacement via import endpoint on fresh install CVSS 4.0HIGH 8.2
  • TI-2026-25804 Wallos: SSRF via HTTP Proxy Environment Variable CVSS 4.0HIGH 8.3
  • TI-2026-23669 Wallos: Server-Side Request Forgery (SSRF) in Notification Testers CVSS 3.0HIGH 8.8
  • TI-2026-39431 Missing Authentication for Critical Function in wallos CVSS 3.1HIGH 7.5
  • TI-2026-39432 Wallos: OIDC state parameter never validated — login CSRF / account takeover CVSS 4.0HIGH 7.5
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences