CVE-2020-12079

10.0 criticalEPSS 2.2%

Critical (10.0) in beakerbrowser beaker. EPSS 2.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 2.2% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-10-31)
CWE: CWE-1321
Published: 2020-04-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

beakerbrowser:beaker

References

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

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