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VULNERABILITIES

CVE-2026-121551 Details

Description

PostfixAdmin through 4.0.5 contains a stored cross-site scripting vulnerability that allows authenticated mailbox users to inject script by creating a TOTP exception with an unescaped description. When a global administrator views totp-exceptions.php, the script runs in the admin session and can issue authenticated admin requests using the page's CSRF token.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/postfixadmin/postfixadmin [email protected]
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/public/users/totp-exceptions.php#L128 [email protected]
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/templates/totp-exceptions.tpl#L56 [email protected]
https://github.com/postfixadmin/postfixadmin/commit/0a894b08769481ce1a7f0f42af901c6d9f88fa9c [email protected]
https://github.com/postfixadmin/postfixadmin/issues/1185 [email protected]

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-121551
NVD Published Date:
Nov 3, 2026
NVD Last Modified:
Nov 3, 2026
Source:
[email protected]
CVE-2026-121551 Details - Not Deferred