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TI-2020-01847 Aliases CVE-2020-1920GHSA-7f53-fmmv-mfjv

Regular expression denial of service in Meta react-native

Priority LOW 36CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

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.

Why it matters now

EPSS 0.01363 71st percentileScored 2026-11-07
Fix Fixed react-native (Facebook): 0.64.1react-native (npm): 0.62.3, 0.64.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Metareact-native0.59.0 and later0.64.1Patch availableCNA
—react-native (npm)0.59.0 to before 0.62.30.62.3Patch availableGHSA-7f53-fmmv-mfjv
—react-native (npm)0.63.0 to before 0.64.10.64.1Patch availableGHSA-7f53-fmmv-mfjv
  • react-native VendorMeta Affected 0.59.0 and later Fixed in 0.64.1 Patch available CNA
  • react-native (npm) Vendor— Affected 0.59.0 to before 0.62.3 Fixed in 0.62.3 Patch available GHSA-7f53-fmmv-mfjv
  • react-native (npm) Vendor— Affected 0.63.0 to before 0.64.1 Fixed in 0.64.1 Patch available GHSA-7f53-fmmv-mfjv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:facebook:react-native:*:*:*:*:*:*:*:*0.59.0 to before 0.64.1VulnerableMeta
  • cpe:2.3:a:facebook:react-native:*:*:*:*:*:*:*:* Versions 0.59.0 to before 0.64.1 Vulnerable ·Meta

Remediation

  • Fix · CNA react-native (Facebook) Fixed in 0.64.1
  • Fix · GHSA-7f53-fmmv-mfjv react-native (npm) Fixed in 0.62.3 Advisory →
  • Fix · GHSA-7f53-fmmv-mfjv react-native (npm) Fixed in 0.64.1 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1920
  2. 2026-10-03 Alias added: GHSA-7f53-fmmv-mfjv

References

Patch 1

Advisory 3

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences