CVE-2026-121551

5.4 MEDIUMpublic exploit available

Published 2026-11-03 · Updated 2026-11-03

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weaknesses

CWE-79

Public exploit & PoC references

https://github.com/postfixadmin/postfixadmin
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/public/users/totp-exceptions.php#L128
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/templates/totp-exceptions.tpl#L56
https://github.com/postfixadmin/postfixadmin/commit/0a894b08769481ce1a7f0f42af901c6d9f88fa9c
https://github.com/postfixadmin/postfixadmin/issues/1185
https://github.com/postfixadmin/postfixadmin/pull/1172
https://github.com/postfixadmin/postfixadmin/pull/1186

All references

https://github.com/postfixadmin/postfixadmin
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/public/users/totp-exceptions.php#L128
https://github.com/postfixadmin/postfixadmin/blob/v4.0.5/templates/totp-exceptions.tpl#L56
https://github.com/postfixadmin/postfixadmin/commit/0a894b08769481ce1a7f0f42af901c6d9f88fa9c
https://github.com/postfixadmin/postfixadmin/issues/1185
https://github.com/postfixadmin/postfixadmin/pull/1172
https://github.com/postfixadmin/postfixadmin/pull/1186
https://www.vulncheck.com/advisories/postfixadmin-through-4.0.5-stored-xss-via-totp-exception-description

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

Related CVEs

MEDIUMCVE-2012-20003PoC
MEDIUMCVE-2012-20004PoC
MEDIUMCVE-2012-20005PoC
MEDIUMCVE-2013-20009PoC
MEDIUMCVE-2014-125131PoC
MEDIUMCVE-2014-125132PoC
MEDIUMCVE-2015-20130PoC
MEDIUMCVE-2016-20098PoC

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