What’s Vulnerable › Vulnerabilities

CVE-2021-40900

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-06-27 · updated 2026-06-17
• Weakness: CWE-1333

Description

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in regexfn v1.0.5 when validating crafted invalid emails.

Affected products

• Regexfn Project Regexfn: 1.0.5

References

• https://github.com/yetingli/SaveResults/blob/main/js/regexfn.js
• https://github.com/yetingli/SaveResults/blob/main/js/regexfn.js

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