Dashboard / CVE-2026-118175

CVE-2026-118175

HIGH
MEDIUM Priority: 0.01 BB Relevance: 75/100
Published: 2026-10-27 Modified: 2026-11-04 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

Description

When replying to, forwarding, or editing a crafted email message as new, Thunderbird could embed parts of a different message stored in the same folder into the message being composed, without showing a blocked content warning. If the user sent the message, the content of the other message was disclosed to the recipients. This vulnerability was fixed in Thunderbird 159 and Thunderbird 153.6.

Weakness Classification (1)

References & Advisories (3)

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001790
Percentile 7.6%
Date 2026-11-04

EPSS Trend

2026-11-04
0.00179
2026-11-03
0.00179
2026-11-02
0.00179
2026-11-01
0.00179
2026-10-31
0.00179
2026-10-30
0.00179
2026-10-29
0.00179
2026-10-28
0.00179

Intelligence Sources

mitre ref →
nvd ref →

External Links