Vulnerability-Lookup

GHSA-6RFW-MQ36-JM8H

Vulnerability from github – Published: 2026-06-19 14:46 – Updated: 2026-06-19 14:46

Summary

Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()

Details

Summary

The AWS Bedrock AgentCore Python SDK (bedrock-agentcore) is an open-source SDK that enables developers to build, deploy, and manage agents on AWS Bedrock AgentCore. An issue exists in the install_packages() method of the Code Interpreter client where crafted package name arguments can bypass input validation and allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox.

Impact

The install_packages() method constructs a 'pip install' shell command executed within the Code Interpreter sandbox using package name arguments provided by the caller. The method applied an incomplete blocklist that allowed crafted package name arguments - specifically pip flags such as '--index-url' and '-r' - to pass validation unchecked. A remote authenticated user who can influence the arguments passed to install_packages() could redirect package resolution to a third-party-controlled PyPI server, or expose the contents of arbitrary sandbox files and environment variables.

Impacted versions: AWS Bedrock AgentCore Python SDK (bedrock-agentcore) versions >= 1.1.3 and < 1.6.1

Patches

This issue has been addressed in bedrock-agentcore version 1.6.1. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.

Workarounds

If you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages(). Restrict calls to a fixed, hardcoded list of approved package names within your application code.

References

If you have any questions or comments about this advisory, we ask that you contact AWS Security via our vulnerability reporting page or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.

We would like to thank Sergio Garcia for collaborating on this issue through the coordinated vulnerability disclosure process.

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

8.4 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "bedrock-agentcore"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.1.3"
            },
            {
              "fixed": "1.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-12530"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-88"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-19T14:46:33Z",
    "nvd_published_at": "2026-06-17T22:16:20Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nThe AWS Bedrock AgentCore Python SDK (bedrock-agentcore) is an open-source SDK that enables developers to build, deploy, and manage agents on AWS Bedrock AgentCore. An issue exists in the install_packages() method of the Code Interpreter client where crafted package name arguments can bypass input validation and allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox.\n\n\n### Impact\nThe install_packages() method constructs a \u0027pip install\u0027 shell command executed within the Code Interpreter sandbox using package name arguments provided by the caller. The method applied an incomplete blocklist that allowed crafted package name arguments - specifically pip flags such as \u0027--index-url\u0027 and \u0027-r\u0027 - to pass validation unchecked. A remote authenticated user who can influence the arguments passed to install_packages() could redirect package resolution to a third-party-controlled PyPI server, or expose the contents of arbitrary sandbox files and environment variables.\n\n**Impacted versions:** AWS Bedrock AgentCore Python SDK (bedrock-agentcore) versions \u003e= 1.1.3 and \u003c 1.6.1\n\n### Patches\nThis issue has been addressed in bedrock-agentcore version 1.6.1. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. \n\n### Workarounds\nIf you are unable to upgrade immediately, avoid passing any user-supplied or externally-influenced strings directly to install_packages(). Restrict calls to a fixed, hardcoded list of approved package names within your application code.\n\n### References\nIf you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.\n\n\nWe would like to thank Sergio Garcia for collaborating on this issue through the coordinated vulnerability disclosure process.",
  "id": "GHSA-6rfw-mq36-jm8h",
  "modified": "2026-06-19T14:46:33Z",
  "published": "2026-06-19T14:46:33Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/aws/bedrock-agentcore-sdk-python/security/advisories/GHSA-6rfw-mq36-jm8h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12530"
    },
    {
      "type": "WEB",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-044-aws"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/aws/bedrock-agentcore-sdk-python"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/bedrock-agentcore/1.6.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()"
}

CVE-2026-12530 (GCVE-0-2026-12530)

Vulnerability from cvelistv5 – Published: 2026-06-17 21:05 – Updated: 2026-06-18 12:52

Title

Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()

Summary

Improper neutralization of argument delimiters in the install_packages() method in AWS Bedrock AgentCore Python SDK versions >= 1.1.3 and < 1.6.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments. To mitigate this issue, users should upgrade to version 1.6.1.

Severity

8.4 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

7.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-88 - Improper neutralization of argument delimiters in a command ('argument injection')

Assigner

AMZN

References

2 references

URL	Tags
https://pypi.org/project/bedrock-agentcore/1.6.1/	release-notes
https://aws.amazon.com/security/security-bulletin…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
AWS	bedrock-agentcore	Affected: 1.1.3 , < 1.6.1 (custom)

Date Public

2026-06-17 14:12

Credits

BeyondTrust

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-6RFW-MQ36-JM8H

Summary

Impact

Patches

Workarounds

References

CVE-2026-12530 (GCVE-0-2026-12530)

Tags

Sightings

Nomenclature