Traffic ServerApplication · Apache
CVE-2024-35296
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 · uneditedInvalid Accept-Encoding header can cause Apache Traffic Server to fail cache lookup and force forwarding requests. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.11 or 9.2.5, 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 confidenceApache Traffic Server fails to properly handle invalid Accept-Encoding headers in incoming requests, causing cache lookup to fail. This forces the server to forward requests to origin servers instead of serving from cache, effectively bypassing the cache layer and potentially causing increased backend load and degraded performance.
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
>= 8.0.0, < 8.1.11>= 9.0.0, < 9.2.5CVSS 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
- None
- Integrity
- High
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
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 checksWork through these to decide whether this CVE applies to you.
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Identify Apache Traffic Server installation and versionRun 'traffic_server -V' or check package manager for installed version (e.g., 'rpm -q traffic-server' or 'dpkg -l trafficserver')Affected if Version is 8.0.0 through 8.1.10, or 9.0.0 through 9.2.4
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Confirm caching is enabledInspect configuration file 'records.config' for 'proxy.config.cache.enabled' set to 1, or check via 'traffic_ctl config get proxy.config.cache.enabled'Affected if Caching is enabled (value is 1) and the server version falls within the affected range
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Verify Accept-Encoding header processing is activeCheck that the ATS instance is configured to handle HTTP requests with Accept-Encoding headers. Review 'records.config' for 'proxy.config.http.accept_encoding' or observe incoming request handling.Affected if Accept-Encoding processing is enabled and version is vulnerable
You are affected if Apache Traffic Server version 8.0.0-8.1.10 or 9.0.0-9.2.4 is running with caching enabled and Accept-Encoding header handling active.
Generated from the published advisory. Verify against your own configuration.
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 · scoped8.1.119.2.5
Upgrade Apache Traffic Server to version 8.1.11 or 9.2.5 to resolve this vulnerability.
8.1.11 or 9.2.5
- Determine your current Apache Traffic Server version by running the version command
- If running version 8.0.0 through 8.1.10, upgrade to version 8.1.11
- If running version 9.0.0 through 9.2.4, upgrade to version 9.2.5
- Restart the Apache Traffic Server service after upgrading
- Verify the new version is running correctly
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
- Testing4.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,144.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-35296 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-35296 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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