CVE-2021-40900

HIGH 7.5CVE-2021-40900 · Published 27/06/2022 · updated 17/06/2026

In short

CVE-2021-40900 is a HIGH (CVSS 7.5) vulnerability affecting regexfn (regexfn project).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 64.6% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
regexfn regexfn_project	`= 1.0.5`	No fix yet

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

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