CVE-2023-43879Public exploitNetwork attack vector

Stored XSS via unsanitized global content blocks

Published Sep 28, 2023 · Updated Sep 23, 2024

Stored XSS in RiteCMS 3.0 Global Content Blocks allows remote authenticated users to execute scripts through crafted body content. The administrative editor stores crafted markup in a block body and renders it without neutralizing HTML event-handler input. Administrative access is required to save the payload, and script execution occurs when a user loads the affected content.

CVSS severity4.8
Medium
EPSS probability0.49%
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 RiteCMS 3.0 Global Content Blocks allows remote authenticated users to execute scripts through crafted body content. The administrative editor stores crafted markup in a block body and renders it without neutralizing HTML event-handler input. Administrative access is required to save the payload, and script execution occurs when a user loads the affected content.

The record

CVE
CVE-2023-43879
Published
Sep 28, 2023
Updated
Sep 23, 2024
Vendor
RiteCMS
Product
RiteCMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

RiteCMS · RiteCMSversion=3.0

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1059.007JavaScript/JScript

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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