CVE-2026-26266 — AI Deep Analysis Summary

🚨 **Essence**: AliasVault suffers from a Stored XSS vulnerability. 📉 **Consequences**: Attackers can inject malicious scripts via email rendering.…

🛡️ **Root Cause**: CWE-79 (Improper Neutralization of Input During Web Page Generation). The flaw lies in how HTML content is rendered inside an iframe using `srcdoc`.…

🎯 **Affected**: AliasVault versions **0.25.3 and earlier**. Specifically, the email rendering component is vulnerable. Ensure you are not running legacy builds.

💀 **Attacker Capabilities**: Full Stored XSS impact. Hackers can steal cookies, hijack sessions, and perform actions on behalf of the victim. High impact on Confidentiality (C:H) and Integrity (I:H).

⚖️ **Exploitation Threshold**: Medium. CVSS indicates **UI:R** (User Interaction Required). The victim likely needs to view the malicious email/content.…

📦 **Public Exploit**: No specific PoC code is listed in the data. However, the vulnerability is confirmed via GitHub Advisory (GHSA-f65p-p65r-g53q). Theoretical exploitation is straightforward for XSS.

🔍 **Self-Check**: Scan for AliasVault instances. Check version numbers against **0.25.3**. Look for email features rendering HTML in iframes. Use DAST tools to test for XSS in email input fields.

✅ **Official Fix**: Yes. Patched in **Version 0.26.0**. See the GitHub release notes and commit `382e2e96fa502891638a48404f6d82dc972ab481` for details.

🚧 **No Patch Workaround**: Isolate the email rendering feature. Disable HTML rendering in emails if possible. Implement strict Content Security Policy (CSP) headers to mitigate script execution in iframes.

🔥 **Urgency**: **HIGH**. CVSS Score implies High impact. Stored XSS is dangerous. Update to v0.26.0 immediately. Do not ignore this if you are running older versions.