CVE-2025-13966Network attack vector

Stored XSS via unescaped buttom_image shortcode attribute

Published Dec 12, 2025 · Updated Dec 12, 2025

Stored XSS in Paypal Payment Shortcode 1.01 and earlier allows remote authenticated users to inject scripts through buttom_image. The [paypal-shortcode] processor accepts the buttom_image attribute and emits it into page output without input sanitization or context-appropriate escaping. Contributor-level access is required; the stored payload executes in the browser whenever a user opens the affected page, enabling actions in that site's security context.

CVSS severity6.4
Medium
EPSS probability0.22%
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 Paypal Payment Shortcode 1.01 and earlier allows remote authenticated users to inject scripts through buttom_image. The [paypal-shortcode] processor accepts the buttom_image attribute and emits it into page output without input sanitization or context-appropriate escaping. Contributor-level access is required; the stored payload executes in the browser whenever a user opens the affected page, enabling actions in that site's security context.

The record

CVE
CVE-2025-13966
Published
Dec 12, 2025
Updated
Dec 12, 2025
Vendor
sonlamtn200
Product
Paypal Payment Shortcode
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 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=* <=1.01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

sonlamtn200 · Paypal Payment Shortcodeversion=* <=1.01

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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