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Back to active CVEs
High · CVSS 8.1CVE-2026-55587

AliasVault: Browser extension WebAuthn bridge accepts forged origin/RP IDCVE-2026-55587

Answer in brief

CVE-2026-55587 records a High severity (CVSS 8.1) vulnerability in AliasVault: Browser extension WebAuthn bridge accepts forged origin/RP ID. The current sources do not mark it as known exploited. The current feed maps aliasvault/aliasvault (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 15, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps aliasvault/aliasvault (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
aliasvault/aliasvaultgeneric<0.29.40.29.4

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for aliasvault/aliasvault.
  2. 2Review the reported fix. Update aliasvault/aliasvault to 0.29.4 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 15, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • ZoneMinder failed token handling bypasses web authenticationSame generic ecosystem
  • temporal-proxy payload decryption is not bound to the request namespaceSame generic ecosystem
  • catdoc through 0.95 Out-of-Bounds Read in xls2csv MULRK Record HandlerSame generic ecosystem
  • catdoc through 0.95 Out-of-Bounds Read via xls2csv copy_unicode_stringSame generic ecosystem
  • Assimp through 6.0.5 NULL Pointer Dereference via Ogre Importer Bone AssignmentSame generic ecosystem
  • Assimp through 6.0.5 NULL Pointer Dereference via Ogre Animation TrackSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-346
Source
CVE List V5
Source checked
Oct 15, 2026
References
3 linked sources
Open source record