8.4

CVE-2026-16796: aws bedrock-agentcore 1.18.1 Argument Injection

CVSS: 8.4v4.0HighAwaiting analysis
AliasesGHSA-j6g5-3hh3-pgw8PYSEC-2026-3551
Published 23-07-2026Last modified 24-07-2026
Open JSON

Vulnerability summary

CVE-2026-16796 is a high (CVSS 8.4) Argument Injection vulnerability in aws bedrock-agentcore 1.18.1. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.2% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.4/10
010
High · v4.0 (CVE.org)
EPSS score
0.73%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 23-07-2026
    PublishedVulnerability first disclosed.
  2. 24-07-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 3 sources · 2 versions

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

0.00 pp

From 0.73% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Aws1 product
PyPI1 product
  • bedrock-agentcore< 1.18.1

2 vendors · 2 products

References

11 links
Show all 11 references