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CVE-2026-122059 mpol wp imageviewer: Cross-site Scripting

6.4 mediumEPSS 0.3%

Medium (6.4) in mpol wp imageviewer. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

CVSS 3.1

6.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 29th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-07. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-79 Improper Neutralization of Input During Web Page Generation (Cross-site Scripting)
OWASP Top 10
A05:2025 Injection
Published
Modified
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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CVE-2026-122059

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Affected

  • mpol:wp imageviewer

Versions

From the CNA's record in the CVE List.

ProductAffected
mpol WP ImageViewerthrough 3.0.2

Attack patterns (CAPEC)

  • CAPEC-63 Cross-Site Scripting (XSS) Likelihood: High · Severity: Very High
  • CAPEC-85 AJAX Footprinting Likelihood: High · Severity: Low
  • CAPEC-209 XSS Using MIME Type Mismatch Severity: Medium
  • CAPEC-588 DOM-Based XSS Likelihood: High · Severity: Very High
  • CAPEC-591 Reflected XSS Likelihood: High · Severity: Very High
  • CAPEC-592 Stored XSS Likelihood: High · Severity: Very High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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