WP ImageViewer <= 3.0.2 - Authenticated (Subscriber+) Stored DOM-Based Cross-Site Scripting via Image 'alt' Attribute

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-122059
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-07 12:17:45 UTC
Updated2026-11-07 12:17:45 UTC
DescriptionThe WP ImageViewer plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'img.alt' parameter in all versions up to, and including, 3.0.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires a front-end content plugin such as bbPress to be active, as it grants Subscriber-level users the bbp_participant capability needed to publish image-bearing content containing the encoded payload. Exploitation by attackers with contributor-level access and above requires that the site allows Contributors (or higher) to submit image HTML in post content — the WordPress default. On a default installation, where that is not configured, the vulnerability requires attackers with custom-level access and above.

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

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 Mpol WP ImageViewer affected 3.0.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js [email protected] plugins.trac.wordpress.org
codeberg.org/cyclotouriste/wp-imageviewer/commit/44601a13af7f7874c62c98956... [email protected] codeberg.org
plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.3/wp-imageviewer-init.js [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/2d3f78b4-04c7-4978-919f-997b3... [email protected] www.wordfence.com
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: Adrien Brunner (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-11-04T21:08:37.000ZVendor Notified
CNA2026-11-06T21:45:04.000ZDisclosed

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