dbcve.org
VclApplication · Apache

CVE-2024-53678

HIGH · 8.8 CVSS v3.1 Published 2025-03-25
Fix available
A fix is available. Upgrade to 2.5.2 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable 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
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache VCL. Users can modify form data submitted when requesting a new Block Allocation such that a SELECT SQL statement is modified. The data returned by the SELECT statement is not viewable by the attacker. This issue affects all versions of Apache VCL from 2.2 through 2.5.1. Users are recommended to upgrade to version 2.5.2, which fixes the issue.

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

SQL injection vulnerability in Apache VCL's Block Allocation feature allows attackers to modify form data and alter SELECT SQL statements. Although the attacker cannot directly view returned data, the injection can potentially enable further exploitation such as data manipulation, denial of service, or leveraging the injection point for additional attacks.

MitigationUpgrade to Apache VCL version 2.5.2 which contains the fix for this SQL injection vulnerability.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
VclApplication
Affected:>= 2.2, < 2.5.2

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
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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. Determine installed Apache VCL version
    Locate the VCL version by checking the web interface footer, the codebase version file, or the package metadata. Common locations include the about page, a VERSION file in the installation directory, or the RPM/DEB package version.
    Affected if The installed version is 2.2 or higher but lower than 2.5.2
  2. Identify if Block Allocation feature is in use
    Review VCL configuration to determine whether Block Allocation is enabled or has been used. Check the VCL database for entries in block-related tables or examine the management node configuration for block allocation settings.
    Affected if Block Allocation feature is enabled or has been used in the VCL environment
  3. Examine web server logs for SQL injection patterns
    Search Apache httpd or other web server access logs for requests to block allocation endpoints that contain SQL injection signatures such as single quotes, UNION SELECT, OR 1=1, or other suspicious SQL syntax in form parameters.
    Affected if Logs contain SQL injection attempts targeting block allocation URLs with malformed SQL syntax
  4. Check database for anomalous block allocation queries
    Review database query logs or enable SQL query logging to identify unusual or unexpected SELECT statements originating from block allocation code that deviate from normal expected query patterns.
    Affected if Database contains unexpected or malformed SELECT statements from VCL block allocation code

You are affected if your Apache VCL installation is version 2.2 through 2.5.1 and the Block Allocation feature is in use, or if web/database logs show SQL injection attempts against block allocation endpoints.

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
Upgrade available Upgrade to 2.5.2 or later
Fixed in 2.5.2
Interim mitigation

Upgrade to Apache VCL version 2.5.2 which contains the fix for this SQL injection vulnerability.

Recommended fix High confidence

2.5.2

  1. 1. Back up your existing Apache VCL installation and database before upgrading
  2. 2. Download Apache VCL version 2.5.2 from the official Apache download repository (https://vcl.apache.org/)
  3. 3. Extract the new version and follow the standard VCL upgrade procedures documented in the VCL installation guide
  4. 4. Ensure the web server and database services are restarted after the upgrade
  5. 5. Test the Block Allocation functionality to verify the application is working correctly post-upgrade

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

Fix this in Vcl Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
14.0 hours of engineering $2,480
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,968.

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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-2024-53678 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
  • 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