CVE-2026-26266

9.3 CRITICAL
Published: March 03, 2026 Modified: March 05, 2026
View on NVD

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.[

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/aliasvault/aliasvault/releases/tag/0.26.0
Source: security-advisories@github.com
Release Notes
https://github.com/aliasvault/aliasvault/security/advisories/GHSA-f65p-p65r-g53q
Source: security-advisories@github.com
Patch Vendor Advisory Mitigation

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.3 / 10.0
EPSS (Exploit Probability)
0.0%
12th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

aliasvault