# CVE-2026-14265: RCE via Deserialization in AWS Advanced JDBC Wrapper

> An attacker with write access to the shared cache can execute arbitrary code on application servers by poisoning cached query results with malicious serialized objects.

- **Severity:** High 7.7 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Jul 2026
- **Updated:** 2 Jul 2026
- **Also known as:** GHSA-c5q4-97jw-jggh

## What is CVE-2026-14265?

CVE-2026-14265 is a high-severity unsafe deserialization vulnerability in AWS Advanced JDBC Wrapper, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Deserialization of untrusted data in the RemoteQueryCachePlugin in Amazon Web Services AWS Advanced JDBC Wrapper 3.3.0 through 4.0.0 might allow an actor with write access to the shared cache infrastructure to execute arbitrary code on application servers that read cached query results via a crafted serialized Java object. The RemoteQueryCachePlugin uses ObjectInputStream without class filtering when deserializing cached query results from Redis or Valkey, enabling gadget chain execution when cache entries are poisoned.

We recommend upgrading to AWS Advanced JDBC Wrapper version 4.0.1 or later.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2026-14265?

It affects 1 product.


Products: Amazon Advanced Jdbc Wrapper.

## How do I fix CVE-2026-14265?

No fix has been published for CVE-2026-14265 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-14265 being exploited?

There is no known exploitation of CVE-2026-14265 in the wild and no public exploit code.

## Other vulnerabilities in AWS Advanced JDBC Wrapper

- [CVE-2026-18061](https://insights.sbomify.com/CVE-2026-18061/): Improper Restriction of XML External Entity References in AWS Advanced JDBC Wrapper RemoteQueryCachePlugin (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-14265 and fix it if it is affected.

What it is: CVE-2026-14265 is a high-severity unsafe deserialization vulnerability in AWS Advanced JDBC Wrapper, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-14265 in the wild and no public exploit code.

Affected product: AWS Advanced JDBC Wrapper. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-14265/ (Markdown: https://insights.sbomify.com/CVE-2026-14265/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-14265
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-14265
- OSV: https://osv.dev/vulnerability/CVE-2026-14265

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-14265/
Summaries are generated and may contain mistakes; the official description above is the record.