Vulnerability · Published Jun 1, 2021 · Assigned by facebook
CVE-2020-1920
High 7.5
In plain English
A high-severity regular-expression denial of service in react-native from Facebook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.4%top 28.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A regular expression denial of service (ReDoS) vulnerability in the validateBaseUrl function can cause the application to use excessive resources, become unresponsive, or crash. This was introduced in react-native version 0.59.0 and fixed in version 0.64.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | react-native | 0.62.3 | GHSA-7f53-fmmv-mfjv |
| npm | react-native | 0.64.1 | GHSA-7f53-fmmv-mfjv |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| react-native | 0.59.0 – before unspecified |
Weakness: CWE-1333