CVE-2022-3983Public exploitNetwork attack vector

Stored XSS via unescaped shortcode attributes

Published Dec 19, 2022 · Updated Apr 17, 2025

Stored cross-site scripting in Checkout for PayPal before 1.0.14 allows remote authenticated users to inject scripts through shortcode attributes. The checkout_for_paypal_button_handler function outputs the item_description and amount attributes without sufficient validation or context-appropriate escaping. Contributor access is sufficient to store the payload in a page or post, and the script executes when another user views or previews that content.

CVSS severity5.4
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 cross-site scripting in Checkout for PayPal before 1.0.14 allows remote authenticated users to inject scripts through shortcode attributes. The checkout_for_paypal_button_handler function outputs the item_description and amount attributes without sufficient validation or context-appropriate escaping. Contributor access is sufficient to store the payload in a page or post, and the script executes when another user views or previews that content.

The record

CVE
CVE-2022-3983
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
Noor Alam
Product
Checkout for PayPal
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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 <1.0.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Noor Alam · Checkout for PayPalversion=0 <1.0.14

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4CISA-ADPCVSS: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.

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
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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