CVE-2023-5810Public exploitNetwork attack vector

Browser script execution via unescaped edit_post_id parameter

Published Oct 27, 2023 · Updated Sep 9, 2024

Reflected XSS in Flusity CMS rolling releases allows remote authenticated users to execute script via edit_post_id in posts.php. The loadPostAddForm path inserts the raw GET value into a generated JavaScript function call without numeric filtering or output encoding. Administrative backend access and user interaction are required; successful exploitation runs script in the viewing browser's Flusity origin.

CVSS severity4.4
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

Reflected XSS in Flusity CMS rolling releases allows remote authenticated users to execute script via edit_post_id in posts.php. The loadPostAddForm path inserts the raw GET value into a generated JavaScript function call without numeric filtering or output encoding. Administrative backend access and user interaction are required; successful exploitation runs script in the viewing browser's Flusity origin.

The record

CVE
CVE-2023-5810
Published
Oct 27, 2023
Updated
Sep 9, 2024
Vendor
Flusity
Product
Flusity CMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Flusity · Flusity CMSversion=n/a

Published CVSS scores

4.4NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/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')
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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