Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()
Priority MEDIUM 40CWE-88Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-88.
Summary
Improper neutralization of argument delimiters in the install_packages() method in AWS Bedrock AgentCore Python SDK before 1.18.1 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 the patched version 1.18.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00725 54th percentileScored 2026-11-07
Fix Fixed bedrock-agentcore 1.18.1 (AWS): 1.18.1bedrock-agentcore (PyPI): 1.18.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AWS | bedrock-agentcore 1.18.1 | before 1.18.1 | 1.18.1 | Patch available | CNA |
| — | bedrock-agentcore (PyPI) | before 1.18.1 | 1.18.1 | Patch available | GHSA-j6g5-3hh3-pgw8 |
- bedrock-agentcore 1.18.1 VendorAWS Affected before 1.18.1 Fixed in 1.18.1 Patch available CNA
- bedrock-agentcore (PyPI) Vendor— Affected before 1.18.1 Fixed in 1.18.1 Patch available GHSA-j6g5-3hh3-pgw8
Remediation
- Fix · CNA bedrock-agentcore 1.18.1 (AWS) Fixed in 1.18.1
- Fix · GHSA-j6g5-3hh3-pgw8 bedrock-agentcore (PyPI) Fixed in 1.18.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16796
- 2026-10-03 Alias added: GHSA-j6g5-3hh3-pgw8
References
Advisory 2
Other 6
- https://github.com/aws/bedrock-agentcore-sdk-python/security/advisories/GHSA-j6g5-3hh3-pgw8
- https://github.com/aws/bedrock-agentcore-sdk-python/pull/581
- https://github.com/aws/bedrock-agentcore-sdk-python/commit/3c4b4ee6b8730e6313a82c743ac37dbcc1c21cdb
- https://aws.amazon.com/security/security-bulletins/2026-065-aws
- https://github.com/aws/bedrock-agentcore-sdk-python
- https://pypi.org/project/bedrock-agentcore/1.18.1
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Sources
- CVE-2026-16796 · CVE Program
- CVE-2026-16796 · NVD
- FIRST EPSS
- GHSA-j6g5-3hh3-pgw8 · GitHub Advisory Database · CC BY 4.0
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