WM JqMath <= 1.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'style' Shortcode Attribute

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-3998
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-15 09:16:32 UTC
Updated2026-04-22 20:23:16 UTC
DescriptionThe WM JqMath plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'style' shortcode attribute of the [jqmath] shortcode in all versions up to and including 1.3. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. The generate_jqMathFormula() function directly concatenates the 'style' attribute value into an HTML style attribute without applying esc_attr() or any other escaping. 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

EPSS: 0.000360000 probability, percentile 0.108320000 (date 2026-04-22)

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

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.4MEDIUMCVSS: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 Webmindpt WM JqMath affected 1.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/wm-jqmath/trunk/wm_jqmath.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wm-jqmath/tags/1.3/wm_jqmath.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wm-jqmath/tags/1.3/wm_jqmath.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/b4aebb45-b47b-4b5a-8281-400a4... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/wm-jqmath/trunk/wm_jqmath.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
CNA2026-04-14T19:46:51.000ZDisclosed

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