Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| arasatasaygin | is.js | 0.9.0 – ≤ 0.9.0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | is_js | <= 0.9.0 | — | GHSA-pvrw-g6fx-mcx2 |