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Traffic ServerApplication · Apache

CVE-2022-40743

MEDIUM · 6.1 CVSS v3.1 Published 2022-12-19
Fix available
A fix is available. Upgrade to after 9.1.3 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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 Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.1.4 or later 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

The xdebug plugin in Apache Traffic Server versions 9.0.0 through 9.1.3 contains an improper input validation vulnerability that allows attackers to inject malicious input, leading to cross-site scripting (XSS) attacks and cache poisoning.

MitigationUpgrade Apache Traffic Server to version 9.1.4 or later to remediate the xdebug plugin 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
Traffic ServerApplication
Affected:>= 8.0.0, <= 8.1.5>= 9.0.0, <= 9.1.3

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
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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. Identify installed Apache Traffic Server version
    Run 'traffic_server -V' or check the package manager (e.g., 'rpm -q traffic-server' or 'dpkg -l traffic-server')
    Affected if Version is 8.0.0-8.1.5 or 9.0.0-9.1.3
  2. Locate the xdebug plugin configuration
    Check the plugins directory (commonly /usr/lib/trafficserver/plugins/ or /etc/traffic_server/plugins/) for xdebug.so and review plugin configuration files in /etc/traffic_server/
    Affected if The xdebug plugin binary exists and is configured for loading
  3. Verify if xdebug plugin is enabled
    Examine traffic_server.config or plugins.config for lines loading xdebug (e.g., 'plugin_xdebug.so' or similar xdebug entry)
    Affected if xdebug plugin is explicitly loaded or enabled in the configuration

You are affected if Apache Traffic Server version falls within 8.0.0-8.1.5 or 9.0.0-9.1.3 AND the xdebug plugin is enabled in your configuration.

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 a release after 9.1.3
Interim mitigation

Upgrade Apache Traffic Server to version 9.1.4 or later to remediate the xdebug plugin vulnerability.

Recommended fix High confidence

9.1.4 or later

  1. 1. Identify the current version of Apache Traffic Server by running 'traffic_server -version' or checking the package manager.
  2. 2. Download Apache Traffic Server 9.1.4 or later from the official Apache download site (https://traffic.apache.org/downloads/).
  3. 3. Stop the Apache Traffic Server service using 'traffic_ctl server stop' or the appropriate system command for your setup.
  4. 4. Back up the existing configuration files (located in the config directory, typically /etc/traffic_server/).
  5. 5. Install the downloaded version following the standard installation procedure for your operating system.
  6. 6. Restore your configuration files from the backup if needed, ensuring compatibility with the new version.
  7. 7. Start the Apache Traffic Server service using 'traffic_ctl server start' or the appropriate system command.
  8. 8. Verify the upgrade was successful by checking the version: 'traffic_server -version' should show 9.1.4 or higher.

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

Fix this in Traffic Server Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.

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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-2022-40743 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