CVE-2026-9291Network attack vector

Authenticated code execution via attacker-controlled pickle deserialization

Published May 22, 2026 · Updated May 22, 2026

Insecure deserialization in Amazon Braket Python SDK before 1.117.0 allows remote authenticated users to execute arbitrary code. The deserialize_values() function trusts the dataFormat field in untrusted results.json content and passes attacker-supplied values to pickle.loads(). Exploitation requires S3 write access to the job output bucket, and code runs when a machine processes the modified job results.

CVSS severity7.5
High
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Insecure deserialization in Amazon Braket Python SDK before 1.117.0 allows remote authenticated users to execute arbitrary code. The deserialize_values() function trusts the dataFormat field in untrusted results.json content and passes attacker-supplied values to pickle.loads(). Exploitation requires S3 write access to the job output bucket, and code runs when a machine processes the modified job results.

The record

CVE
CVE-2026-9291
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Amazon Web Services
Product
Amazon Braket Python SDK
Classifications
CWE-502, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.10.0 <1.117.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Amazon Web Services · Amazon Braket Python SDKversion=1.10.0 <1.117.0

Published CVSS scores

7.1AMZNCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
7.5AMZNCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo