CVE-2026-39526
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 · uneditedAuthorization Bypass Through User-Controlled Key vulnerability in wpstream WpStream wpstream allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WpStream: from n/a through < 4.11.2.
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 confidenceAuthorization bypass vulnerability in WpStream plugin allows attackers to exploit incorrectly configured access control security levels through user-controlled keys, potentially enabling unauthorized access to restricted functionality or data.
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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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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Locate wpstream plugin installationCheck the WordPress plugins directory at wp-content/plugins/ for the wpstream folder, or use WP-CLI: wp plugin list --name=wpstreamAffected if The plugin folder does not exist, meaning wpstream is not installed (not affected)
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Determine installed wpstream versionCheck the main plugin file header in wp-content/plugins/wpstream/wpstream.php for the 'Version' field, or use WP-CLI: wp plugin get wpstream --field=versionAffected if Version is empty or cannot be determined (manual inspection required)
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Compare version to vulnerability thresholdCompare the installed version number to 4.11.2 - any version lower than 4.11.2 is within the affected rangeAffected if Installed version is less than 4.11.2 (for example, 4.11.1, 4.10.0, etc.)
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Identify key-based access control configurationExamine wpstream plugin settings in WordPress admin under wpstream configuration pages, looking for access control, security level, or key-based authentication settingsAffected if Key-based access control settings are present and configurable by users (the vulnerability exploits these user-controlled key settings)
User is affected if wpstream plugin is installed with version lower than 4.11.2 and the key-based access control feature is enabled and configurable.
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.
dbcve · scopedUpdate WpStream plugin to version 4.11.2 or later to obtain the patched version that addresses the insecure access control configuration.
4.11.2 or later
- Backup your WordPress site before making any changes
- Navigate to Plugins > Installed Plugins in WordPress admin
- Locate the WpStream plugin
- Update WpStream to version 4.11.2 or later
- Verify the update was successful by checking the plugin version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39526 — 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-2026-39526 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