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TI-2026-39432 Aliases CVE-2026-54599

Wallos: OIDC state parameter never validated — login CSRF / account takeover

Priority HIGH 68CWE-352Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
Tampering
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-352.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00223 12th percentileScored 2026-11-07
Fix Fixed Wallos (ellite): 4.9.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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 4.9.44.9.4Patch availableCNA
  • Wallos Vendorellite Affected before 4.9.4 Fixed in 4.9.4 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 4.9.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54599

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-2024-19429 Wallos before 1.15.3 is vulnerable to SQL Injection via the category and payment parameters to /subscriptions/get.php. CVSS 3.1HIGH 8.1
See all 31 →

Sources

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