What’s Vulnerable › Vulnerabilities

CVE-2021-3777: Inefficient Regular Expression Complexity in daaku/nodejs-tmpl

• 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: 2021-09-15 · updated 2026-06-17
• Weakness: CWE-1333

Description

nodejs-tmpl is vulnerable to Inefficient Regular Expression Complexity

Affected products

• daaku/nodejs-tmpl: before 1.0.5 — fixed in 1.0.5
• Npm Tmpl: before 1.0.5 — fixed in 1.0.5

How to fix

Upgrade to a fixed version: daaku/nodejs-tmpl 1.0.5; Npm Tmpl 1.0.5. Check the vendor advisory for mitigations.

References

• https://github.com/daaku/nodejs-tmpl/commit/4c654e4d1542f329ed561fd95ccd80f30c6872d6
• https://huntr.dev/bounties/a07b547a-f457-41c9-9d89-ee48bee8a4df
• https://github.com/daaku/nodejs-tmpl/commit/4c654e4d1542f329ed561fd95ccd80f30c6872d6
• https://huntr.dev/bounties/a07b547a-f457-41c9-9d89-ee48bee8a4df

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