CVE-2026-55587 AliasVault - Authentication Bypass

AliasVault browser extension < 0.29.4 contains an authentication bypass caused by lack of origin and relying-party identifier verification in passkey requests, letting attackers obtain valid assertions for different websites, exploit requires extension installed, unlocked, configured, and user approval.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Broken Authentication
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published
15 October 2026
Updated
16 October 2026
Weakness
CWE-346

Vendor fix

Update to version 0.29.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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