dbcve.org
Code InjectionWeakness · CWE-94

CVE-2026-56049

HIGH · 8.5 CVSS v3.1 Published 2026-06-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
91/100
Remediation priority · Urgent
Remotely reachable Zero-click 8 weeks old

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 · unedited
Contributor Remote Code Execution (RCE) in Post Snippets <= 4.0.19 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 · high confidence

Authenticated contributor-level users can execute arbitrary code on WordPress sites running Post Snippets plugin versions 4.0.19 and below due to insufficient access controls on snippet execution functionality.

MitigationUpdate Post Snippets plugin to version newer than 4.0.19 immediately; limit contributor-level user permissions until patch is applied.

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
High
Privileges
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify Post Snippets plugin is installed
    In WordPress admin, go to Plugins > Installed Plugins and look for 'Post Snippets' in the list, or check the plugins directory for post-snippets folder
    Affected if Post Snippets plugin is not found in the WordPress installation
  2. Identify the installed Post Snippets version
    In WordPress admin, go to Plugins > Installed Plugins, find Post Snippets, and note the version number displayed under the plugin name, or inspect the main plugin file header for 'Version:'
    Affected if The version number is 4.0.19 or lower
  3. Confirm contributor role users exist
    In WordPress admin, go to Users > All Users and check if any users have the 'Contributor' role assigned, or query the wp_usermeta table for wp_capabilities containing 'contributor'
    Affected if At least one user with contributor role exists in the WordPress site
  4. Verify snippet execution is accessible to contributors
    Log in as a contributor user and attempt to access the Post Snippets settings page or create/edit a snippet, or inspect the plugin code for capability checks on snippet execution functions
    Affected if Contributor users can access or execute snippet functionality without elevated permissions

A WordPress site is affected if Post Snippets plugin version 4.0.19 or lower is installed AND at least one contributor-level user account exists that can access snippet execution features.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update Post Snippets plugin to version newer than 4.0.19 immediately; limit contributor-level user permissions until patch is applied.

Recommended fix Moderate confidence

Post Snippets 4.0.20 or later

  1. Log in to the WordPress admin dashboard
  2. Navigate to Plugins > Installed Plugins
  3. Locate 'Post Snippets' in the plugin list
  4. Check the current version number displayed
  5. If the version is 4.0.19 or lower, click 'Update Now' to upgrade to the latest version
  6. Alternatively, download the latest version from wordpress.org/plugins/post-snippets/ and upload manually via Plugins > Add New > Upload Plugin
  7. After updating, verify the new version number reflects 4.0.20 or higher
  8. Test that the plugin functionality remains intact
Caveat Minimal risk; minor plugin updates typically maintain backward compatibility

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-56049 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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