is.js is a general-purpose check library. Versions 0.9.0 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). is.js uses a regex copy-pasted from a gist to validate URLs. Trying to validate a malicious string can cause the regex to loop “forever." This vulnerability was found using a CodeQL query which identifies inefficient regular expressions. is.js has no patch for this issue.
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Mon, 14 Apr 2025 15:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-04-14T14:37:16.925Z
Reserved: 2020-10-01T00:00:00.000Z
Link: CVE-2020-26302

Updated: 2024-08-04T15:56:04.334Z

Status : Modified
Published: 2022-12-22T21:15:08.877
Modified: 2024-11-21T05:19:48.677
Link: CVE-2020-26302

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