What’s Vulnerable › Vulnerabilities

CVE-2021-3810: Inefficient Regular Expression Complexity in cdr/code-server

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-17 · updated 2026-06-17
• Weakness: CWE-1333

Description

code-server is vulnerable to Inefficient Regular Expression Complexity

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/commit/ca617df135e78833f93c8320cb2d2cf8bba809f5
• https://huntr.dev/bounties/38888513-30fc-4d8f-805d-34070d60e223
• https://github.com/cdr/code-server/commit/ca617df135e78833f93c8320cb2d2cf8bba809f5
• https://huntr.dev/bounties/38888513-30fc-4d8f-805d-34070d60e223

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