What’s Vulnerable › Vulnerabilities

CVE-2021-42648

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-11 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability exists in Coder Code-Server before 3.12.0, allows attackers to execute arbitrary code via crafted URL.

Affected products

• code-server: before 3.12.0 — fixed in 3.12.0

How to fix

Upgrade to a fixed version: code-server 3.12.0. Check the vendor advisory for mitigations.

References

• https://github.com/cdr/code-server/issues/4355
• https://github.com/cdr/code-server/issues/4355

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