CVE-2026-39563
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 · uneditedMissing Authorization vulnerability in ILLID Share This Image share-this-image allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Share This Image: from n/a through <= 2.12.
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 confidenceMissing Authorization vulnerability in the ILLID Share This Image WordPress plugin allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized access to image sharing functionality due to insufficient permission checks.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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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Check if Share This Image plugin is installedNavigate to WordPress admin > Plugins, or inspect the /wp-content/plugins/ directory for a folder containing 'share-this-image'Affected if The plugin appears in the installed plugins list or the plugin folder exists in the filesystem
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Identify the installed plugin versionIn WordPress admin, go to Plugins > Installed Plugins > click on 'Share This Image' and view the version number in the plugin details header, or read the 'readme.txt' or 'share-this-image.php' file in the plugin folder for the 'Version' headerAffected if The displayed version is 2.12 or any version number lower than 2.12
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Verify WordPress user roles existIn WordPress admin, go to Users > All Users to see the list of existing user accounts with different roles (Administrator, Editor, Author, Contributor, Subscriber)Affected if Multiple user accounts with varying permission levels exist in the WordPress installation
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Test for exposed AJAX endpointsInspect the plugin PHP files (typically in /wp-content/plugins/share-this-image/) for 'add_action("wp_ajax_' or 'add_action("wp_ajax_nopriv_' hooks, then attempt to access those AJAX URLs with a low-privilege user account or as a logged-out visitor to verify if authorization is enforcedAffected if The plugin registers AJAX actions without proper capability checks (like 'manage_options' or 'edit_posts') and these endpoints respond without requiring authentication or proper authorization verification
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Review plugin capability configurationExamine the plugin PHP source code for 'current_user_can()' checks, 'capability' parameters, or 'roles' validation around sensitive functions that modify image sharing settingsAffected if No capability checks are found before performing settings modifications, or the checks use overly permissive capabilities that lower-privileged users possess
If the Share This Image plugin is installed and the version is 2.12 or lower, the environment is affected by this missing authorization vulnerability.
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 to the latest patched version of the Share This Image plugin that implements proper authorization checks, or implement application-level access controls to verify user permissions before allowing image sharing operations.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39563 — 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-2026-39563 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