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CVE-2020-5263

15
FAUCET Score

CVE-2020-5263 affects auth0.js versions greater than 8.0.0 and before 9.12.3, where an authentication error can expose a user's plaintext password within the returned error object. This vulnerability carries a CVSS score of 4.9 (Medium) due to its potential for high confidentiality impact if the error object is improperly handled, though it requires high privileges to exploit. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0.0, <= 9.13.1CPE matchmatch criteria
cpe:2.3:a:auth0:auth0.js:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.1
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 59th percentile among its peer group of 3,561 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: auth0-jsFixed in: 9.13.2

Vendor Advisories (1)

npmGHSA-prfq-f66g-43mphigh

Information disclosure through error object in auth0.js

Apr 10, 2020

References

github.com / auth0/auth0.js/commit/355ca749b229fb93142f0b3978399b248d710828
PatchThird Party Advisory
github.com / auth0/auth0.js/security/advisories/GHSA-prfq-f66g-43mp
Third Party Advisory