CVE-2026-26266

MEDIUM EPSS 14.8%
Published Mar 3, 20263mo ago · Modified Jun 17, 20261w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Mar 3, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

AliasVault is a privacy-first password manager with built-in email aliasing. A stored cross-site scripting (XSS) vulnerability was identified in the email rendering feature of AliasVault Web Client versions 0.25.3 and lower. When viewing received emails on an alias, the HTML content is rendered in an iframe using srcdoc, which does not provide origin isolation. An attacker can send a crafted email containing malicious JavaScript to any AliasVault email alias. When the victim views the email in the web client, the script executes in the same origin as the application. No sanitization or sandboxing was applied to email HTML content before rendering. This vulnerability is fixed in 0.26.0.[

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
14.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
aliasvaultaliasvault* <0.26.0

References 3

  • github.com https://github.com/aliasvault/aliasvault/commit/382e2e96fa502891638a48404f6d82dc972ab481
    Patch
  • github.com https://github.com/aliasvault/aliasvault/releases/tag/0.26.0
    Release Notes
  • github.com https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f65p-p65r-g53q
    MitigationPatchVendor Advisory

Remediation

  • github.com https://github.com/aliasvault/aliasvault/commit/382e2e96fa502891638a48404f6d82dc972ab481
    Patch
  • github.com https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f65p-p65r-g53q
    MitigationPatchVendor Advisory