CVE-2022-42095Public exploitNetwork attack vector

Stored script execution via Raw HTML Page body

Published Nov 23, 2022 · Updated Apr 28, 2025

Stored XSS in Page content in Backdrop CMS 1.23.0 allows remote authenticated users to execute script in a viewer's browser. The Page creation form stores an event-handler payload entered in the Body field and renders it unfiltered when Raw HTML is selected. Exploitation requires administrator access, the restricted Raw HTML permission, and a viewer to open the saved Page; Backdrop considers that permission sufficient for site takeover and reports no added risk.

CVSS severity4.8
Medium
EPSS probability2.00%
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 Page content in Backdrop CMS 1.23.0 allows remote authenticated users to execute script in a viewer's browser. The Page creation form stores an event-handler payload entered in the Body field and renders it unfiltered when Raw HTML is selected. Exploitation requires administrator access, the restricted Raw HTML permission, and a viewer to open the saved Page; Backdrop considers that permission sufficient for site takeover and reports no added risk.

The record

CVE
CVE-2022-42095
Published
Nov 23, 2022
Updated
Apr 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 2025Record 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

4.8GitHub Advisory DatabaseCVSS: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
4.8CISA-ADPCVSS: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')

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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