Paypal Shortcodes <= 0.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'amount' and 'name' Shortcode Attributes

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Summary

CVECVE-2026-3617
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-21 04:17:30 UTC
Updated2026-04-24 16:27:44 UTC
DescriptionThe Paypal Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'amount' and 'name' shortcode attributes in all versions up to, and including, 0.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The swer_paypal_shortcode() function extracts shortcode attributes using extract() and shortcode_atts() at line 89, then directly concatenates the $name and $amount values into HTML input element value attributes at lines 105-106 without applying esc_attr() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Risk And Classification

Primary CVSS: v3.1 6.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED6.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Swergroup Paypal Shortcodes affected 0.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/a9521ae8-e20e-49dd-a402-5521f... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/paypal-shortcodes/trunk/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/paypal-shortcodes/tags/0.3/paypal-shortcodes.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Gilang Asra Bilhadi (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-20T15:07:07.000ZDisclosed
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