CVE-2022-40047Public exploitNetwork attack vector

Authenticated script execution via unsanitized page parameter

Published Oct 11, 2022 · Updated Jul 9, 2026

Reflected XSS in FlatPress 1.2.1 allows remote authenticated users to execute script in a user's browser via the page parameter. /flatpress/admin.php places the page value into the response without adequate sanitization or output encoding. Exploitation requires login and user interaction; injected script can read or alter session data and act in the affected blog with the victim's privileges.

CVSS severity5.4
Medium
EPSS probability1.27%
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 FlatPress 1.2.1 allows remote authenticated users to execute script in a user's browser via the page parameter. /flatpress/admin.php places the page value into the response without adequate sanitization or output encoding. Exploitation requires login and user interaction; injected script can read or alter session data and act in the affected blog with the victim's privileges.

The record

CVE
CVE-2022-40047
Published
Oct 11, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1539Steal Web Session Cookie

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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