CVE-2026-54599: high-severity vulnerability in ellite Wallos
Wallos: OIDC state parameter never validated — login CSRF / account takeover
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.2%
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:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
ellite · WallosRelated CVEs — ellite Wallos
In the same product, most dangerous first.
CVE-2026-30828HIGHWallos: SSRF via url parameter leading to File TraversalEPSS 0.6%CVE-2026-54600HIGHWallos: Unauthenticated database replacement via import endpoint on fresh installEPSS 0.6%CVE-2026-61640HIGHWallos: SSRF via OIDC Token/UserInfo URL ConfigurationEPSS 0.5%CVE-2026-61641HIGHWallos: OIDC account takeover via email-based account linking without `email_verified` checkEPSS 0.5%CVE-2026-30840HIGHWallos: Server-Side Request Forgery (SSRF) in Notification TestersEPSS 0.5%CVE-2026-61639HIGHWallos: Zip Slip path traversal in database restore writes files to webrootEPSS 0.5%