EUVD-2026-44988Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/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
AC:H reflects the prerequisite OTel-to-CloudWatch configuration; PR:L for required authenticated CloudWatch Logs read access; UI:R because a victim user must actively invoke the agent to generate logged content.
Primary rating from Vendor (AMZN).
CVSS VectorVendor: AMZN
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:N/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
Lifecycle Timeline
1DescriptionCVE.org
AWS Bedrock AgentCore Python SDK is an open-source Python library that provides client tools for building AI agents on the Amazon Bedrock AgentCore platform.
Unintended logging of sensitive user content in the OpenTelemetry instrumentation in AWS Bedrock AgentCore Python SDK versions 1.4.8 and 1.5.0 might allow a local authenticated user with access to CloudWatch Logs to access raw user prompts and agent responses containing sensitive data via span attributes. The SDK wrote raw user prompts and complete agent responses into OpenTelemetry span attributes on every invocation without filtering or masking. These spans flow into the customer's aws/spans CloudWatch log group, exposing sensitive content to any principal with log read access.
We recommend you upgrade to version 1.5.1 or later. Users who ran affected versions should also review and purge sensitive content from their aws/spans CloudWatch log groups.
AnalysisAI
Unintended sensitive data exposure in AWS Bedrock AgentCore Python SDK versions 1.4.8 and 1.5.0 allows any low-privileged IAM principal with CloudWatch Logs read access to retrieve verbatim user prompts and complete AI agent responses from the aws/spans log group. The SDK's OpenTelemetry instrumentation populates span attributes with raw conversational content on every invocation without filtering or masking, and these spans are automatically exported to CloudWatch, bypassing any application-layer data controls. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Three conditions must be simultaneously present: AWS Bedrock AgentCore Python SDK version 1.4.8 or 1.5.0 must be deployed with OpenTelemetry instrumentation enabled (the SDK default); the OTel exporter must be configured to emit spans to the customer's aws/spans CloudWatch log group (standard setup); and the attacker must be an authenticated AWS IAM principal with CloudWatch Logs read permissions (e.g., logs:GetLogEvents, logs:FilterLogEvents, or the managed policy CloudWatchLogsReadOnlyAccess) scoped to that log group. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The vendor-assigned CVSS 4.0 score of 5.7 (Medium) accurately captures several meaningful prerequisites. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An internal data analyst at an organization running AWS Bedrock AgentCore 1.5.0 uses the AWS Console to browse the aws/spans CloudWatch log group as part of routine debugging. Without any exploit code or elevated privileges - only their standard CloudWatch Logs read IAM policy - they can query log streams and read OTel span attributes containing the verbatim text of prompts submitted by colleagues or customers, including potentially confidential legal queries, medical questions, or authentication tokens passed through the agent. … |
| Remediation | Vendor-released patch: version 1.5.1, available immediately at https://pypi.org/project/bedrock-agentcore/1.5.1/; upgrade by running pip install bedrock-agentcore>=1.5.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
BentoML version 1.4.2 and earlier contains an unauthenticated remote code execution vulnerability through insecure deser
pgAdmin 4 contains critical remote code execution vulnerabilities in the Query Tool download and Cloud Deployment endpoi
The renderLocalView function in render/views.py in graphite-web in Graphite 0.9.5 through 0.9.10 uses the pickle Python
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Rated critica
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCiph
pyLoad download manager version prior to 0.5.0b3.dev77 exposes the Flask SECRET_KEY through an unauthenticated endpoint.
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and conse
Unauthenticated remote code execution in Marimo ≤0.20.4 allows attackers to execute arbitrary system commands via the `/
pyLoad is the free and open-source Download Manager written in pure Python. Rated medium severity (CVSS 5.3), this vulne
Langflow (a visual LLM pipeline builder) contains a critical unauthenticated code execution vulnerability (CVE-2026-3301
Cross-user flow execution in Langflow (< 1.9.1) lets any authenticated API-key holder run another user's flow by passing
Same technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today