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ConcertApplication · Ibm

CVE-2024-51451

MEDIUM · 6.5 CVSS v3.1 Published 2026-02-04
Fix available
A fix is available. Upgrade to 2.2.0 or later.
See remediation →
74/100
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
IBM Concert 1.0.0 through 2.1.0 is vulnerable to HTTP header injection, caused by improper validation of input by the HOST headers. This could allow an attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.

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

IBM Concert versions 1.0.0 through 2.1.0 contains an HTTP header injection vulnerability due to improper validation of HOST header input. An attacker can inject arbitrary HTTP headers by manipulating the HOST header, potentially leading to cross-site scripting attacks, cache poisoning, or session hijacking.

MitigationImplement strict validation and sanitization of the HOST header value, rejecting any input containing header injection characters (such as newlines). Consider whitelisting allowed HOST values or using a web application firewall.

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
ConcertApplication
Affected:>= 1.0.0, < 2.2.0

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
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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. Determine IBM Concert version
    Locate the IBM Concert installation and identify its version using the product's CLI (for example, 'ibm-concert version' or checking package metadata), configuration files, or Docker image labels if applicable
    Affected if Installed version is 1.0.0, 1.x.x, 2.0.x, or 2.1.0 (any version from 1.0.0 through 2.1.0 inclusive)
  2. Confirm web component is exposed
    Verify that the IBM Concert web interface or API is accessible over HTTP/HTTPS. Check network exposure settings, reverse proxy configurations, or firewall rules that allow inbound HTTP traffic to the Concert service
    Affected if The web component accepts external HTTP requests (even on localhost)
  3. Inspect HOST header handling
    Send a test HTTP request with a manipulated HOST header containing injection characters (such as a newline or %0D%0A sequence) to the Concert endpoint and observe whether the response reflects the injected header or behaves unexpectedly
    Affected if The application accepts and processes the crafted HOST header without rejecting or sanitizing header injection characters

If IBM Concert version is 1.0.0 through 2.1.0 and the web interface is exposed, the environment is affected by this HTTP header injection vulnerability.

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 2.2.0 or later
Fixed in 2.2.0
Interim mitigation

Implement strict validation and sanitization of the HOST header value, rejecting any input containing header injection characters (such as newlines). Consider whitelisting allowed HOST values or using a web application firewall.

Recommended fix High confidence

2.2.0

  1. 1. Identify the current IBM Concert version currently installed (e.g., check via IBM Concert UI or CLI tools)
  2. 2. Review IBM Concert 2.2.0 release notes and upgrade documentation for any prerequisites or special upgrade instructions
  3. 3. Create a complete backup of the current IBM Concert configuration, database, and any custom settings
  4. 4. Schedule a maintenance window for the upgrade
  5. 5. Upgrade IBM Concert from the current version to version 2.2.0 following IBM's documented upgrade procedure
  6. 6. After upgrade, verify that the HOST header injection vulnerability is resolved by testing with malformed HOST headers
  7. 7. Confirm all dependent services and integrations are functioning correctly post-upgrade

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

Fix this in Concert Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.

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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-2024-51451 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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  • No spam, self-promotion, credentials, or personal data