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Server-Side Request Forgery (SSRF)Weakness · CWE-918

CVE-2025-31009

MEDIUM · 5.4 CVSS v3.1 Published 2025-04-09
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
63/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

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
Server-Side Request Forgery (SSRF) vulnerability in Jan Boddez IndieBlocks indieblocks allows Server Side Request Forgery.This issue affects IndieBlocks: from n/a through <= 0.13.1.

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 confidence

Server-Side Request Forgery (SSRF) vulnerability in the IndieBlocks WordPress plugin allows remote attackers to induce the server to make arbitrary HTTP requests to internal or external resources. This can enable access to internal services, port scanning, or bypassing firewall restrictions.

MitigationUpdate IndieBlocks to the latest patched version. If no update is available, restrict outgoing network requests from the WordPress server and implement URL allowlist validation for any user-supplied URLs in the plugin.

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

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

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

  1. Verify IndieBlocks plugin is installed
    In WordPress admin, go to Plugins > Installed Plugins and look for 'IndieBlocks' in the list. Alternatively, check the /wp-content/plugins/ directory for an indieblocks folder.
    Affected if The IndieBlocks plugin is present in the WordPress installation
  2. Check installed IndieBlocks version
    In WordPress admin, go to Plugins > Installed Plugins, find IndieBlocks, and note the version number displayed below the plugin name. Alternatively, check the version in the plugin header comment in the main PHP file.
    Affected if The installed version is older than the latest patched version available from the WordPress plugin repository
  3. Identify if URL-based features are configured
    In WordPress admin, go to Settings > IndieBlocks and examine configuration for features that accept external URLs, such as webmention endpoints, Micropub clients, or URL preview services.
    Affected if Any URL-input fields are present in the plugin settings and are accessible to untrusted sources
  4. Check if external request endpoints are exposed
    Review publicly accessible WordPress endpoints that may process user-supplied URLs through IndieBlocks, such as /wp-json/indieblocks/* or custom rewrite rules. Use a web proxy or curl to probe these endpoints with arbitrary URL parameters.
    Affected if Endpoints that trigger server-side HTTP requests are accessible without authentication or proper URL validation

The environment is affected if IndieBlocks is installed with an outdated version and URL-handling features are exposed to untrusted input.

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 IndieBlocks to the latest patched version. If no update is available, restrict outgoing network requests from the WordPress server and implement URL allowlist validation for any user-supplied URLs in the plugin.

Recommended fix Moderate confidence

Any version newer than 0.13.1 (check WordPress plugin repository for the latest release)

  1. 1. Backup your WordPress database and files before making any changes.
  2. 2. Navigate to the WordPress admin dashboard > Plugins page.
  3. 3. Locate IndieBlocks in the installed plugins list.
  4. 4. If an update is available, click 'Update Now' to update IndieBlocks to the latest version.
  5. 5. Verify the update completed successfully by checking the plugin version.
  6. 6. Test that IndieBlocks functionality works as expected after the update.

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

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2025-31009 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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