Dashboard / CVE-2026-12311

CVE-2026-12311

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 59/100
Published: 2026-06-16 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: Low
I: None
A: None

Description

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Weakness Classification (2)

Affected Software (4)

VendorProductVersion
mozilla firefox < 152.0
mozilla firefox 140.0 – 140.12.0
mozilla thunderbird < 152.0.0
mozilla thunderbird 140.0 – 140.12.0

References & Advisories (5)

Bug Bounty Relevance

59 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

4.7 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

EPSS — Exploitation Probability

0.18%
Raw Score 0.001850
Percentile 8.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00185
2026-10-28
0.00185

Intelligence Sources

nvd ref →

External Links