CVE-2020-5263

Name: CVE-2020-5263
Creator: NVD / NIST
Published: 2020-04-09T16:15:12.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2020-5263 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. auth0.js (NPM package auth0-js) greater than version 8.0.0 and before version 9.12.3 has a vulnerability. In the case of an (authentication) error, the error object returned by the library contains the original request of the user, which may include the plaintext password the user entered. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

auth0.js (NPM package auth0-js) greater than version 8.0.0 and before version 9.12.3 has a vulnerability. In the case of an (authentication) error, the error object returned by the library contains the original request of the user, which may include the plaintext password the user entered. If the error object is exposed or logged without modification, the application risks password exposure. This is fixed in version 9.12.3

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.87%

54.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Auth0	Auth0.Js	>= 8.0.0, <= 9.13.1

References

https://github.com/auth0/auth0.js/commit/355ca749b229fb93142f0b3978399b248d710828Patch, Third Party Advisory
https://github.com/auth0/auth0.js/security/advisories/GHSA-prfq-f66g-43mpThird Party Advisory
https://github.com/auth0/auth0.js/commit/355ca749b229fb93142f0b3978399b248d710828Patch, Third Party Advisory
https://github.com/auth0/auth0.js/security/advisories/GHSA-prfq-f66g-43mpThird Party Advisory

Timeline

Published: Apr 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-5263?

How severe is CVE-2020-5263?

CVE-2020-5263 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2020-5263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-5263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST