CVE-2020-26306: GHSL-2020-296: Regular Expression Denial of Service (ReDoS) in Knwl.js

Severity: high (CVSS 8.7 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-26 · updated 2026-06-17
Weakness: CWE-1333

Description

Knwl.js is a Javascript library that parses through text for dates, times, phone numbers, emails, places, and more. Versions 1.0.2 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, no known patches are available.

Affected products

benhmoore Knwl: through 1.0.2

References

https://github.com/benhmoore/Knwl/issues/106
https://securitylab.github.com/advisories/GHSL-2020-296-redos-Knwl.js/

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