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CVE-2023-6813

Login by Auth0 <= 4.6.0 - Reflected Cross-Site Scripting via wle

6.1 MediumFix available

The Login by Auth0 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘wle’ parameter in all versions up to, and including, 4.6.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.36%Up 0.3 points since Jul 10, 2024
90%50%10%1%

What each source reports

CVE List Score used 6.1

Login by Auth0 <= 4.6.0 - Reflected Cross-Site Scripting via wle

The Login by Auth0 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘wle’ parameter in all versions up to, and including, 4.6.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Record
CVE-2023-6813
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2024-2447 6.1

The Login by Auth0 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘wle’ parameter in all versions up to, and including, 4.6.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Record
EUVD-2024-2447
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-x6p7-44rh-m3rr 5.1

Login by Auth0 plugin for WordPress vulnerable to Reflected Cross-Site Scripting

Impact

The Auth0 WordPress plugin allows site administrators to opt-in to allowing the use of a wle parameter, which can be passed to the WordPress login page by end users. When this parameter is supplied using an expected value (which is randomly generated by the plugin, by default), the end user can fallback to using WordPress' native authentication behavior. (This is generally intended as an emergency fallback for administrators to still be able to access their dashboard in the event something goes wrong.)

In previous versions of the plugin, under specific conditions, this parameter could potentially accept an arbitrary string that would be improperly rendered, potentially allowing for a cross-site scripting (XSS) attack on the login page.

Patches

Please upgrade to v4.6.1 of the plugin to resolve the issue.

Record
GHSA-x6p7-44rh-m3rr
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
NVD 6.1

The Login by Auth0 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘wle’ parameter in all versions up to, and including, 4.6.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Record
CVE-2023-6813
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-x6p7-44rh-m3rr 5.1

Login by Auth0 plugin for WordPress vulnerable to Reflected Cross-Site Scripting

Impact

The Auth0 WordPress plugin allows site administrators to opt-in to allowing the use of a wle parameter, which can be passed to the WordPress login page by end users. When this parameter is supplied using an expected value (which is randomly generated by the plugin, by default), the end user can fallback to using WordPress' native authentication behavior. (This is generally intended as an emergency fallback for administrators to still be able to access their dashboard in the event something goes wrong.)

In previous versions of the plugin, under specific conditions, this parameter could potentially accept an arbitrary string that would be improperly rendered, potentially allowing for a cross-site scripting (XSS) attack on the login page.

Patches

Please upgrade to v4.6.1 of the plugin to resolve the issue.

Record
GHSA-x6p7-44rh-m3rr
CVSS 4.0
5.1 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
auth0/wordpress
Packagist
 through 4.6.0
4.6.1
auth0/wordpress
Packagist
 before 4.6.1, plus listed versions
2.0.02.1.02.1.12.1.112.1.2
Show 45 moreShow less
2.1.32.1.42.1.52.1.62.1.72.1.82.1.92.2.03.1.13.1.23.1.33.1.43.10.03.11.03.11.13.11.23.11.33.2.03.2.103.2.143.2.193.2.213.2.223.2.233.2.243.2.253.2.53.2.83.2.93.3.23.4.03.5.03.5.13.5.23.6.03.6.13.6.23.7.03.7.13.7.33.8.03.8.13.9.04.0.04.1.0
4.6.1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-6813 is a medium vulnerability (CVSS 6.1) in Auth0 Login By Auth0, published July 10, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 29th percentile. Fixed in auth0/wordpress 4.6.1.

References

This page doesn't list everything

Left out here: 7 versions. The JSON record has them.

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