Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-26266— AliasVault affected by Cross-Site Scripting (XSS) via Email HTML Rendering

Quick assessment

Affected
aliasvault aliasvault
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AliasVault是AliasVault开源的一个密码管理器。 AliasVault 0.25.3及之前版本存在跨站脚本漏洞，该漏洞源于电子邮件渲染功能中，HTML内容在iframe中使用srcdoc渲染且未提供源隔离，可能导致存储型跨站脚本攻击。

CVSS 9.3 · Critical EPSS 0.38% · P30
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-26266

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
AliasVault affected by Cross-Site Scripting (XSS) via Email HTML Rendering
Source: CVE Program / CVE List V5
Vulnerability 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.[
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
AliasVault 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AliasVault是AliasVault开源的一个密码管理器。 AliasVault 0.25.3及之前版本存在跨站脚本漏洞，该漏洞源于电子邮件渲染功能中，HTML内容在iframe中使用srcdoc渲染且未提供源隔离，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

Vendor Product Affected Versions CPE Subscribe
aliasvault aliasvault < 0.26.0 -

II. Public POCs for CVE-2026-26266

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-26266

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-26266 (1)

Vendor Advisories for CVE-2026-26266 (1)

Other References for CVE-2026-26266 (1)

IV. Related Vulnerabilities

Same product: aliasvault
Same vendor: aliasvault
Same weakness: CWE-79

V. Comments for CVE-2026-26266

No comments yet

Leave a comment