CVE-2026-121551

PostfixAdmin through 4.0.5 Stored XSS via TOTP Exception Description

Published Nov 3, 2026 CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
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.
Title PostfixAdmin through 4.0.5 Stored XSS via TOTP Exception Description
First Time appeared Postfixadmin Project
Postfixadmin Project postfixadmin
Weaknesses CWE-79
CPEs cpe:2.3:a:postfixadmin_project:postfixadmin:*:*:*:*:*:*:*:*
Vendors & Products Postfixadmin Project
Postfixadmin Project postfixadmin
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 3, 2026, 6:27 PM
Reserved
Nov 3, 2026, 2:46 PM
Status
Awaiting Analysis
Published
Nov 3, 2026, 4:17 PM
Modified
Nov 3, 2026, 7:18 PM