CVE-2026-122059
The 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.
Executive briefing
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Evidence confidence: Not assessed Evidence-derived, not an exploitability verdict
Severity & attack characteristics
CVSS vector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Technical explanation & impact
Technical root-cause details are not available in the current source record.
Assess the impact using the published CVSS metrics and the affected vendor component.
Affected products and versions
NVD has not supplied machine-readable vulnerable CPE product/version entries for this CVE. This is an information gap, not proof that no products are affected. Check the vendor advisory references below.
Remediation & validation
- Identify exposure by comparing the affected product and version ranges with your asset inventory, SBOM and externally exposed services.
- Review the linked vendor security advisory or patch notes. Upgrade to a vendor-confirmed fixed release; do not infer a fixed version from the CVE description.
- Until patched, consider restricting network access or disabling the affected feature where operationally safe. These are temporary controls, not a substitute for a vendor fix.
- Validate the remediation with a version check and vulnerability rescan, then retain change evidence.
No fixed version is displayed unless it is explicitly established by a vendor advisory. Follow the vendor's release notes for exact product and branch applicability.
Vendor advisories, patches & exploit references
- https://codeberg.org/cyclotouriste/wp-imageviewer/commit/44601a13af7f7874c62c98956c6747322a6ab3c0 REFERENCE security@wordfence.com
- https://plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js#L132 VENDOR security@wordfence.com
- https://plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js#L139 VENDOR security@wordfence.com
- https://plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.2/wp-imageviewer-init.js#L224 VENDOR security@wordfence.com
- https://plugins.trac.wordpress.org/browser/wp-imageviewer/tags/3.0.3/wp-imageviewer-init.js VENDOR security@wordfence.com
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2d3f78b4-04c7-4978-919f-997b39307c5b?source=cve REFERENCE security@wordfence.com