CVE-2026-15446

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Source
https://cve.org/CVERecord?id=CVE-2026-15446
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15446.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-15446
Published
2026-08-19T06:37:54Z
Modified
2026-08-22T03:31:10Z
Severity
  • 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
EWWW Image Optimizer <= 8.7.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'data-script' Lazy Load Attribute in Post Content
Details

The EWWW Image Optimizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'data-script' Lazy Load Attribute in Post Content in all versions up to, and including, 8.7.3 due to insufficient input sanitization and output 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. The exploit is achieved by embedding a crafted img element with class='lazyload' and a data-script attribute pointing to an attacker-controlled URL in post content, which the plugin's bundled lazysizes ls.unveilhooks addon then uses to dynamically create and insert a script element into the DOM at page view time.

Database specific 
{
    "cna_assigner": "Wordfence",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15446.json"
}
References

Affected packages

Git / github.com/nosilver4u/ewww-image-optimizer

Affected ranges

Type
GIT
Repo
https://github.com/nosilver4u/ewww-image-optimizer
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4488aafaee9212db370a5ed2dcb9bad7912b897d
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "8.7.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.3.0
v3.3.1
v3.4.1
v3.5.0
v4.*
v4.0.0
v4.0.3
v4.0.6
v4.2.2
v4.3.1
v4.3.2
v4.4.0
v4.4.1
v4.4.2
v4.5.0
v4.5.1
v4.5.2
v4.5.3
v4.6.0
v4.6.1
v4.6.2
v4.6.3
v4.7.0
v4.7.1
v4.7.2
v4.7.3
v4.7.4
v4.8.0
v4.8.1
v4.9.0
v4.9.1
v4.9.2
v4.9.3
v5.*
v5.0.0
v5.1.0
v5.1.2
v5.1.3
v5.2.0
v5.2.2
v5.2.3
v5.2.4
v5.3.1
v5.3.2
v5.4.0
v5.4.1
v5.6.0
v5.6.1
v5.7.0
v5.8.0
v5.8.2
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.1.0
v6.1.1
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9
v6.2.0
v6.2.1
v6.2.2
v6.2.3
v6.2.4
v6.2.5
v6.4.0
v6.4.1
v6.4.2
v6.5.0
v6.5.1
v6.5.2
v6.6.0
v6.7.0
v6.8.0
v6.9.0
v6.9.1
v6.9.2
v6.9.3
v7.*
v7.0.0
v7.0.1
v7.0.2
v7.1.0
v7.2.0
v7.2.1
v7.2.2
v7.2.3
v7.3.0
v7.4.0
v7.5.0
v7.6.0
v7.7.0
v7.8.0
v7.9.0
v7.9.1
v8.*
v8.0.0
v8.1.0
v8.1.1
v8.1.2
v8.1.3
v8.1.4
v8.2.0
v8.2.1
v8.3.0
v8.3.1
v8.4.0
v8.4.1
v8.5.0
v8.6.0
v8.7.0
v8.7.1
v8.7.2
v8.7.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-15446.json"