CVE-2021-25039Network attack vector

Script execution via unescaped request parameters

Published Mar 7, 2022 · Updated Aug 3, 2024

Reflected XSS in Obtain Infotech's Multisite Content Copier/Updater before 2.1.0 allows remote attackers to execute script via parameters. The plugin writes wmcc_content_type, wmcc_source_blog, and wmcc_record_per_page into HTML attributes without sanitization or output escaping. Exploitation requires a user to load an attacker-crafted request, causing script execution in that user's WordPress session and enabling page data access or actions available to the session.

CVSS severity6.1
Medium
EPSS probability0.80%
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 Obtain Infotech's Multisite Content Copier/Updater before 2.1.0 allows remote attackers to execute script via parameters. The plugin writes wmcc_content_type, wmcc_source_blog, and wmcc_record_per_page into HTML attributes without sanitization or output escaping. Exploitation requires a user to load an attacker-crafted request, causing script execution in that user's WordPress session and enabling page data access or actions available to the session.

The record

CVE
CVE-2021-25039
Published
Mar 7, 2022
Updated
Aug 3, 2024
Vendor
Obtain Infotech
Product
WordPress Multisite Content Copier/Updater
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 7, 2022CVE 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

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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=2.1.0 <2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Obtain Infotech · WordPress Multisite Content Copier/Updaterversion=2.1.0 <2.1.0

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

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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