Prototype Pollution in Beakerbrowser Beaker
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.
Vulnerability class: Prototype Pollution
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/beakerbrowser/beaker/issues/1519 (Third Party Advisory)
- github.com/beakerbrowser/beaker/releases/tag/0.8.9 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2020-12079?
- CVE-2020-12079 is a critical-severity vulnerability in Beakerbrowser Beaker, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 10.0/10. Published 2020-04-23.
- How severe is CVE-2020-12079?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2020-12079 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.