CVE-2022-4658Public exploitNetwork attack vector

Stored script execution via unescaped shortcode attribute

Published Jan 16, 2023 · Updated Apr 4, 2025

Stored XSS in Frank Bültge RSSImport 4.6.1 and earlier allows remote authenticated users to execute scripts via a crafted shortcode. The shortcode handler places the unvalidated target attribute into generated HTML without output escaping, allowing attribute breakout. Contributor access is sufficient to store the payload in a post or page; it executes when a visitor hovers over the rendered feed list.

CVSS severity6.4
Medium
EPSS probability0.47%
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 Frank Bültge RSSImport 4.6.1 and earlier allows remote authenticated users to execute scripts via a crafted shortcode. The shortcode handler places the unvalidated target attribute into generated HTML without output escaping, allowing attribute breakout. Contributor access is sufficient to store the payload in a post or page; it executes when a visitor hovers over the rendered feed list.

The record

CVE
CVE-2022-4658
Published
Jan 16, 2023
Updated
Apr 4, 2025
Vendor
Frank Bültge
Product
RSSImport
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 4, 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?

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

  1. Affected versionversion=0 <=4.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Frank Bültge · RSSImportversion=0 <=4.6.1

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
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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