---
id: CVE-2026-55587
title: AliasVault is a privacy-first password manager with built-in email aliasing
summary: >-
  AliasVault is a privacy-first password manager with built-in email aliasing.
  Prior to 0.29.4, the AliasVault browser extension passkey provider does not
  bind passkey requests to the actual webpage origin or verify that the
  requested rely…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-346
vendor: aliasvault
product: aliasvault
affected:
  - aliasvault < 0.29.4
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T19:17:40.657'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55587'
references:
  - url: >-
      https://github.com/aliasvault/aliasvault/commit/a60d0966e66ecf4f6558dc40e3feb1313072ce2b
    label: security-advisories@github.com
  - url: 'https://github.com/aliasvault/aliasvault/releases/tag/0.29.4'
    label: security-advisories@github.com
  - url: >-
      https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f99p-jfhr-6ffc
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-15T19:25:46.435Z'
---

## Overview

AliasVault is a privacy-first password manager with built-in email aliasing. Prior to 0.29.4, the AliasVault browser extension passkey provider does not bind passkey requests to the actual webpage origin or verify that the requested relying-party identifier matches the current website. A malicious website can provide forged origin and relying-party values and, if a victim with a matching stored passkey approves the AliasVault passkey prompt, obtain a valid assertion for a different website. Exploitation requires the extension to be installed, unlocked, and configured as a passkey provider, requires a stored passkey for the impersonated site, and cannot occur silently because the victim must approve the prompt. The server, web application, and mobile applications are not affected. This issue is fixed in version 0.29.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.