CVE-2026-55587 (GCVE-0-2026-55587)

Vulnerability from cvelistv5 – Published: 2026-10-15 18:21 – Updated: 2026-10-15 18:21
VLAI
Title
AliasVault: Browser extension WebAuthn bridge accepts forged origin/RP ID
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 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.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-346 - Origin Validation Error
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7752 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
aliasvault aliasvault Affected: < 0.29.4
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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          "versions": [
            {
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          "value": "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."
        }
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            "baseScore": 8.1,
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            "confidentialityImpact": "HIGH",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-346",
              "description": "CWE-346: Origin Validation Error",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T18:21:53.069Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f99p-jfhr-6ffc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f99p-jfhr-6ffc"
        },
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          "name": "https://github.com/aliasvault/aliasvault/commit/a60d0966e66ecf4f6558dc40e3feb1313072ce2b",
          "tags": [
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          "url": "https://github.com/aliasvault/aliasvault/commit/a60d0966e66ecf4f6558dc40e3feb1313072ce2b"
        },
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/aliasvault/aliasvault/releases/tag/0.29.4"
        }
      ],
      "source": {
        "advisory": "GHSA-f99p-jfhr-6ffc",
        "discovery": "UNKNOWN"
      },
      "title": "AliasVault: Browser extension WebAuthn bridge accepts forged origin/RP ID"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-55587",
    "datePublished": "2026-10-15T18:21:53.069Z",
    "dateReserved": "2026-06-16T23:18:03.169Z",
    "dateUpdated": "2026-10-15T18:21:53.069Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-16",
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      "percentile": "0.03659"
    },
    "nvd": {
      "cve": {
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                "product": "aliasvault",
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                "versions": [
                  {
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                    "version": "\u003c 0.29.4"
                  }
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          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          }
        ],
        "id": "CVE-2026-55587",
        "lastModified": "2026-10-15T19:17:40.657",
        "metrics": {
          "cvssMetricV31": [
            {
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        "references": [
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            "url": "https://github.com/aliasvault/aliasvault/commit/a60d0966e66ecf4f6558dc40e3feb1313072ce2b"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/aliasvault/aliasvault/releases/tag/0.29.4"
          },
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            "source": "security-advisories@github.com",
            "url": "https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f99p-jfhr-6ffc"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
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                "value": "CWE-346"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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