Medium severity5.4NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121551
CVE-2026-121551
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.
Affected products
1- Range: <=4.0.5
Patches
Vulnerability mechanics
References
7- github.com/postfixadmin/postfixadmin/blob/v4.0.5/public/users/totp-exceptions.phpnvd
- github.com/postfixadmin/postfixadmin/blob/v4.0.5/templates/totp-exceptions.tplnvd
- github.com/postfixadmin/postfixadmin/commit/0a894b08769481ce1a7f0f42af901c6d9f88fa9cnvd
- github.com/postfixadmin/postfixadmin/issues/1185nvd
- github.com/postfixadmin/postfixadmin/pull/1172nvd
- github.com/postfixadmin/postfixadmin/pull/1186nvd
- www.vulncheck.com/advisories/postfixadmin-through-4.0.5-stored-xss-via-totp-exception-descriptionnvd
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