Dashboard / CVE-2026-121551

CVE-2026-121551

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 50/100
Published: 2026-11-03 Modified: 2026-11-03 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: Passive
S: X
AT: None
VC: None
VI: None
VA: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
postfixadmin postfixadmin 0
postfixadmin postfixadmin 0

References & Advisories (8)

https://github.com/postfixadmin/postfixadmin/pull/1172
technical-description patch issue-tracking
https://github.com/postfixadmin/postfixadmin/pull/1186
technical-description patch issue-tracking

Bug Bounty Relevance

50 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

5.1 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.28%
Raw Score 0.002830
Percentile 21.1%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00283
2026-11-13
0.00283
2026-11-12
0.00283
2026-11-10
0.00283
2026-11-09
0.00283
2026-11-08
0.00283
2026-11-07
0.00283
2026-11-06
0.00283
2026-11-05
0.00283
2026-11-04
0.00283

Intelligence Sources

mitre ref →
nvd ref →

External Links