What’s Vulnerable › Vulnerabilities

CVE-2020-27224

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-24 · updated 2026-06-17
• Weakness: CWE-79

Description

In Eclipse Theia versions up to and including 1.2.0, the Markdown Preview (@theia/preview), can be exploited to execute arbitrary code.

Affected products

• Eclipse Foundation Eclipse Theia: through 1.2.0

References

• https://github.com/eclipse-theia/theia/issues/7954
• https://omespino.com/write-up-google-bug-bounty-xss-to-cloud-shell-instance-takeover-rce-as-root-5000-usd/
• https://github.com/eclipse-theia/theia/issues/7954
• https://omespino.com/write-up-google-bug-bounty-xss-to-cloud-shell-instance-takeover-rce-as-root-5000-usd/

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