CVE-2020-13643Public exploitNetwork attack vector

Reflected XSS via unverified live editor data

Published May 28, 2020 · Updated Aug 4, 2024

Reflected XSS in SiteOrigin Page Builder before 2.10.16 allows remote attackers to execute JavaScript in an administrator's browser. The live-editor-preview.php template renders attacker-controlled live_editor_panels_data from a Custom HTML widget without nonce validation. Exploitation requires an authenticated administrator to open a crafted live preview, enabling browser-context actions such as creating another administrator account.

CVSS severity8.8
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in SiteOrigin Page Builder before 2.10.16 allows remote attackers to execute JavaScript in an administrator's browser. The live-editor-preview.php template renders attacker-controlled live_editor_panels_data from a Custom HTML widget without nonce validation. Exploitation requires an authenticated administrator to open a crafted live preview, enabling browser-context actions such as creating another administrator account.

The record

CVE
CVE-2020-13643
Published
May 28, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 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

8.8MITRECVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001User Execution: Malicious Link

Public exploit references

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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