CVE-2021-24793Public exploitNetwork attack vector

Stored XSS via unescaped campaign Feed URL

Published Nov 1, 2021 · Updated Aug 3, 2024

Stored XSS in WPeMatico RSS Feed Fetcher before 2.6.12 allows remote authenticated users to execute script through a Feed URL. The campaign editor stores the Feed URL and later writes it into an HTML attribute without escaping, so a crafted quote closes the attribute and injects script. An administrator-level account must create or edit the campaign, and the script runs when the campaign is edited again or executed.

CVSS severity4.8
Medium
EPSS probability0.64%
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 WPeMatico RSS Feed Fetcher before 2.6.12 allows remote authenticated users to execute script through a Feed URL. The campaign editor stores the Feed URL and later writes it into an HTML attribute without escaping, so a crafted quote closes the attribute and injects script. An administrator-level account must create or edit the campaign, and the script runs when the campaign is edited again or executed.

The record

CVE
CVE-2021-24793
Published
Nov 1, 2021
Updated
Aug 3, 2024
Vendor
Etruel Developments LLC
Product
WPeMatico RSS Feed Fetcher
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.6.12 <2.6.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Etruel Developments LLC · WPeMatico RSS Feed Fetcherversion=2.6.12 <2.6.12

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1059.007Command and Scripting Interpreter: JavaScript/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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