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High 7.5Published Aug 31, 2026

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

Updated under an hour ago ()

Does this affect you?

It affects ellite Wallos. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
7.5 HIGH (v4.0, CNA)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
Weakness (CWE)
CWE-352
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Sep 1, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
ellite Wallos
ellite:wallos (from the name)
before 4.9.4
CNA record

References

  • x-refsource-confirm
  • x-refsource-misc

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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