high7.5
CVE-2020-26302
is_js vulnerable to Regular Expression Denial of Service
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | is_js | <= 0.9.0 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Is.Js Project | Is.Js | through 0.9.0 |