VulnerabilityPublished 19 Oct 2026

CVE-2026-14265- Deserialization of Untrusted Data in AWS Advanced JDBC Wrapper RemoteQueryCachePlugin

Affects advanced-jdbc-wrapperSource AWS Security Bulletins

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Not known to be exploited · fixed in 4.0.1 : patch advanced-jdbc-wrapper soon.

Data as of 13 Nov 2026, 23:53 UTC

Severity

High

Rated High by Threat Radar from the AWS Security Bulletins text · CVSS not yet scored by NVD

EPSS: 0.7% chance of exploitation in 30 days – higher than 54% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.0.1

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Mavencom.amazonaws/advanced-jdbc-wrapper`pkg:maven/com.amazonaws/advanced-jdbc-wrapper`Other threats	Affected =3.3.0 =4.0.0	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in AWS Advanced JDBC Wrapper version 4.0.1. Users should upgrade to this version or later. If immediate upgrade is not possible, disable the RemoteQueryCachePlugin (which is not enabled by default) and restrict write access to the Redis/Valkey cache infrastructure to trusted principals only.

Description

Bulletin ID: 2026-051-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 07/01/2026 12:45 PM PDT Description: The AWS Advanced JDBC Wrapper is an open-source JDBC driver wrapper that extends a JDBC driver to enable Amazon Aurora and AWS Cloud features such as failover handling and caching. We identified CVE-2026-14265, an issue in the RemoteQueryCachePlugin of the AWS Advanced JDBC Wrapper. When this plugin is enabled, query results read from the shared Redis/Valkey cache are deserialized without class filtering. An actor with write access to the shared cache infrastructure could insert a crafted serialized Java object that, when read by an application, results in execution of arbitrary code on the application server. Impacted versions: >=3.3.0 AND <=4.0.0 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

Impact

An attacker with write access to the shared Redis/Valkey cache can execute arbitrary code on the application server by inserting crafted serialized Java objects. This can lead to full compromise of the affected application environment. The vulnerability requires the RemoteQueryCachePlugin to be enabled and attacker write access to the cache infrastructure.

Summary

The AWS Advanced JDBC Wrapper's RemoteQueryCachePlugin deserializes cached query results from a shared Redis/Valkey cache without proper class filtering. This allows an attacker who can write to the shared cache to insert malicious serialized Java objects that lead to remote code execution on the application server when deserialized. The vulnerability affects versions >=3.3.0 and <=4.0.0 and has been addressed in version 4.0.1. Mitigations include disabling the plugin or restricting write access to the cache infrastructure.

References

aws.amazon.com/security/security-bulletins/rss/2026-051-aws/ (opens in a new tab)

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