Vulnerability Report

CVE-2020-12079

Title: Beaker Sandbox Escape / RCE

Other

Proof Of Concept

No public PoC currently indexed for CVE-2020-12079.

CWE Category CWE-1321
Published Date Apr 23, 2020
Modified Date Jun 17, 2026
Exploit Status Not Found
Score 10.0 CVSS v3.1
Exploit Probability (EPSS)
2.23%

Vulnerability Summary

CVE-2020-12079: Beaker before 0.8.9 allows a sandbox escape, enabling system access and code execution. This occurs because Electron context isolation is not used, and therefore an attacker can conduct a prototype-pollution attack against the Electron internal messaging API.

Impacted Vendors

B
beakerbrowser 1
P
python 1
B
beaker-project 1

Reference Links

https://github.com/beakerbrowser/beaker/issues/1519 https://github.com/beakerbrowser/beaker/releases/tag/0.8.9 https://github.com/beakerbrowser/beaker/issues/1519 https://github.com/beakerbrowser/beaker/releases/tag/0.8.9
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
10.0
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-12079 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.