Dashboard / CVE-2026-125756

CVE-2026-125756

HIGH
MEDIUM Priority: 0.03 BB Relevance: 66/100
Published: 2026-11-10 Modified: 2026-11-12 First seen: 2026-11-10 Status: active

Attack Surface

Network No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: X
AT: Present
VC: None
VI: High
VA: None

Description

postal-mime before 4.2.1 contains a parser differential vulnerability in its address parser that truncates the domain at folding whitespace or comments preceding a dot. Remote attackers can craft From headers that pass SPF/DKIM/DMARC alignment for their own subdomain while PostalMime.parse() reports a spoofed victim sender address.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
postalsys postal-mime 0 < 4.2.1
postalsys postal-mime 0 < 4.2.1

References & Advisories (5)

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/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

0.39%
Raw Score 0.003920
Percentile 33.9%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00392
2026-11-13
0.00392
2026-11-12
0.00392

Intelligence Sources

mitre ref →
nvd ref →

External Links