CVE-2023-43877Public exploitNetwork attack vector

Stored XSS via unencoded Home Page fields

Published Oct 4, 2023 · Updated Sep 19, 2024

Stored XSS in Rite CMS 3.0 Home Page settings allows remote authenticated users to execute scripts in visitors' browsers. The administration form stores crafted SVG onload markup in content, properties, and sidebar fields, and the public home page renders it without effective output encoding. Administrative access is required to plant the payload; any visitor who opens the affected home page runs it in the site's browser origin.

CVSS severity4.8
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Rite CMS 3.0 Home Page settings allows remote authenticated users to execute scripts in visitors' browsers. The administration form stores crafted SVG onload markup in content, properties, and sidebar fields, and the public home page renders it without effective output encoding. Administrative access is required to plant the payload; any visitor who opens the affected home page runs it in the site's browser origin.

The record

CVE
CVE-2023-43877
Published
Oct 4, 2023
Updated
Sep 19, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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