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.[
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Fixes

Solution

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Workaround

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History

Thu, 05 Mar 2026 21:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:aliasvault:aliasvault:*:*:*:*:*:*:*:*

Wed, 04 Mar 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 04 Mar 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Aliasvault
Aliasvault aliasvault
Vendors & Products Aliasvault
Aliasvault aliasvault

Tue, 03 Mar 2026 22:30:00 +0000

Type Values Removed Values Added
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.[
Title AliasVault affected by Cross-Site Scripting (XSS) via Email HTML Rendering
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-04T16:52:03.957Z

Reserved: 2026-02-12T17:10:53.412Z

Link: CVE-2026-26266

cve-icon Vulnrichment

Updated: 2026-03-04T16:50:47.685Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-03T23:15:54.877

Modified: 2026-03-05T21:22:01.810

Link: CVE-2026-26266

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-04T14:53:37Z

Weaknesses