CVE-2023-45146
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 · uneditedXXL-RPC is a high performance, distributed RPC framework. With it, a TCP server can be set up using the Netty framework and the Hessian serialization mechanism. When such a configuration is used, attackers may be able to connect to the server and provide malicious serialized objects that, once deserialized, force it to execute arbitrary code. This can be abused to take control of the machine the server is running by way of remote code execution. This issue has not been fixed.
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 confidenceXXL-RPC framework using Netty with Hessian deserialization allows remote attackers to send malicious serialized objects that trigger arbitrary code execution on the server. This is a classic unsafe deserialization vulnerability in the Hessian library that has not been patched.
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<= 1.7.0CVSS 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
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 checksWork through these to decide whether this CVE applies to you.
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Identify XXL-RPC installationSearch for XXL-RPC JAR files, dependencies in pom.xml/build.gradle, or running processes named 'xxl-rpc' in your environmentAffected if XXL-RPC framework is present in the environment
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Determine XXL-RPC versionCheck the version string in the XXL-RPC JAR filename, pom.xml dependency version, or build.gradle dependency declarationAffected if The version is 1.7.0 or lower
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Verify Hessian serialization is in useInspect application configuration files or serialization settings for 'hessian' or HessianSerializer class usage in the XXL-RPC configurationAffected if Hessian serialization is enabled or configured as the serialization mechanism for XXL-RPC
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Confirm Netty-based RPC endpoint is exposedReview network listener configurations for Netty server ports bound by the XXL-RPC service, typically found in application.yml or embedded codeAffected if A Netty-based RPC listener is exposed and accessible on the network
The environment is affected if XXL-RPC version 1.7.0 or lower is running with Hessian serialization enabled over a Netty-based RPC endpoint.
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 · scopedSince no official patch exists, immediately restrict network access to the RPC service, disable Hessian serialization if alternative is available, or disable the XXL-RPC service entirely until a fix is released.
- Implement network-level access controls to restrict who can connect to the XXL-RPC TCP server
- Place the XXL-RPC server behind a firewall or VPN to prevent unauthorized external connections
- If possible, disable the Hessian serialization mechanism and use a safer alternative
- Monitor for suspicious connections to the RPC server port
- Implement application-layer authentication if the framework supports it
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation8.0 h
- Implementation24.0 h
- Testing12.0 h
- Review / QA8.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $14,656.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-45146 — 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-2023-45146 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
- No weaponised exploit code, or anything meant to cause harm
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