CVE-2026-57342
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSubscriber Cross Site Scripting (XSS) in ShortPixel Adaptive Images <= 3.11.3 versions.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA stored Cross Site Scripting (XSS) vulnerability in the ShortPixel Adaptive Images WordPress plugin (versions 3.11.3 and below) allows authenticated users with subscriber-level privileges to inject malicious JavaScript code through plugin inputs, which is then executed when other users view the affected content.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed ShortPixel Adaptive Images versionIn WordPress admin, go to Plugins > Installed Plugins and locate ShortPixel Adaptive Images. The version number is displayed below the plugin name. Alternatively, check the plugin file /wp-content/plugins/shortpixel-adaptive-images/shortpixel-plugin.php for the 'Version' header in the plugin comments.Affected if The installed version is 3.11.3 or lower.
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Verify subscriber-level user access existsIn WordPress admin, go to Users > Users and review user roles. Check if any users have the 'Subscriber' role. Go to Users > User Roles to confirm subscribers can access plugin settings or if any subscriber-level user account exists in the system.Affected if At least one subscriber-level user account exists and the plugin is active.
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Inspect plugin settings for suspicious stored contentNavigate to Settings > ShortPixel Adaptive Images in WordPress admin. Examine all input fields including API keys, file paths, URLs, and configuration options. Look for unexpected script tags, event handlers (onclick, onerror, onload), or javascript: URIs in any text fields.Affected if Any plugin setting field contains script tags, javascript: protocols, or suspicious HTML/script content.
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Review recent content for injected XSS payloadsCheck recent posts, pages, and media library entries. Examine the page source or use browser developer tools to inspect if any content contains encoded or obfuscated script tags, especially in image alt text, captions, or custom fields that the plugin processes.Affected if Any content processed by the plugin contains XSS payloads in fields accessible to subscriber users.
You are affected if the ShortPixel Adaptive Images plugin version is 3.11.3 or below AND subscriber-level user accounts exist in your WordPress installation.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate ShortPixel Adaptive Images to a version newer than 3.11.3. If no patched version is available, disable the plugin until a fix is released, or implement Content Security Policy headers as a temporary mitigation.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-57342 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-57342 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data