UNKNOWNUnknown →
CVE-2026-4269 - Improper S3 ownership verification in Bedrock AgentCore Starter Toolkit
Affected packages
No package-level mapping for this advisory.
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- 0.24%
- EPSS percentile
- 15.5%
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs. This advisory is in the top 15%.
Sources
Structured record: https://aws.amazon.com/security/security-bulletins/rss/2026-008-aws/
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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