Dashboard / CVE-2026-121946

CVE-2026-121946

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 74/100
Published: 2026-11-04 Modified: 2026-11-12 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

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

Description

zbateson mail-mime-parser before 3.0.9 and 4.x before 4.0.6 contains a CRLF header injection vulnerability in message-building helpers that fail to strip CR and LF characters. Attackers supplying crafted MIME type, charset, encoding, micalg, or protocol values can inject extra header lines such as a forged Bcc into outgoing messages.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
zbateson mail-mime-parser 0.3.0 < 3.0.9
zbateson mail-mime-parser 4.0.0 < 4.0.6
zbateson mail-mime-parser 0.3.0 < 3.0.9
zbateson mail-mime-parser 4.0.0 < 4.0.6

References & Advisories (7)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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

0.33%
Raw Score 0.003250
Percentile 26.0%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00325
2026-11-13
0.00325
2026-11-12
0.00325
2026-11-10
0.00325
2026-11-09
0.00325
2026-11-08
0.00325
2026-11-07
0.00325
2026-11-06
0.00325
2026-11-05
0.00325

Intelligence Sources

mitre ref →
nvd ref →

External Links