CVE-2026-16796 json
Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()
published 2026-07-23 3 mo ago modified 2026-10-24 15 d ago also GHSA-j6g5-3hh3-pgw8 , PYSEC-2026-3551 , EUVD-2026-48422
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
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.
Patch / fix
- pypi bedrock-agentcore 1.18.1
- AWS bedrock-agentcore 1.18.1 1.18.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| CNA | 4.0 | 8.4 | 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 |
| CNA | 4.0 | 8.4 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| OSV | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | bedrock-agentcore | <1.18.1 |
1.18.1 |
Affected products
- AWS bedrock-agentcore 1.18.1
Classification
- Weakness
-
- CWE-88 Improper Neutralization of Argument Delimiters in a Command
References
-
pypi.org
/project/bedrock-agentcore/1.18.1/
release-notes, patch
-
github.com
/aws/bedrock-agentcore-sdk-python/pull/581
web
-
github.com
/aws/bedrock-agentcore-sdk-python/commit/3c4b4ee6b8730e6313a82c743ac37dbcc1c21cdb
web
-
aws.amazon.com
/security/security-bulletins/2026-065-aws/
vendor-advisory
-
github.com
/aws/bedrock-agentcore-sdk-python/security/advisories/GHSA-j6g5-3hh3-pgw8
release-notes, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-16796
advisory
-
aws.amazon.com
/security/security-bulletins/2026-065-aws
web
-
github.com
/aws/bedrock-agentcore-sdk-python
package
-
pypi.org
/project/bedrock-agentcore/1.18.1
web
-
pypi.org
/project/bedrock-agentcore
package
-
github.com
/advisories/GHSA-j6g5-3hh3-pgw8
advisory
Sources
- CVE List CVE-2026-16796
- GitHub Advisory GHSA-j6g5-3hh3-pgw8
- NVD CVE-2026-16796
- OSV PYSEC-2026-3551
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.