CVE-2020-6753Network attack vector

Stored XSS via unsanitized plugin input

Published Apr 1, 2020 · Updated Aug 4, 2024

Stored cross-site scripting in Login by Auth0 for WordPress before 4.0.0 allows remote attackers to execute script in other users' pages. The plugin stores attacker-controlled values and later renders them on multiple pages without sufficient input sanitization or output escaping; the precise parameter is not publicly identified. Exploitation requires a payload to be stored and a victim to view an affected page, allowing script execution in the victim browser with the page's authority; no server-side code execution is documented.

CVSS severity6.1
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Login by Auth0 for WordPress before 4.0.0 allows remote attackers to execute script in other users' pages. The plugin stores attacker-controlled values and later renders them on multiple pages without sufficient input sanitization or output escaping; the precise parameter is not publicly identified. Exploitation requires a payload to be stored and a victim to view an affected page, allowing script execution in the victim browser with the page's authority; no server-side code execution is documented.

The record

CVE
CVE-2020-6753
Published
Apr 1, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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