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TI-2026-82183 Aliases CVE-2026-115415

Secret masking bypass in environment tool in Strands Agents Tools

Priority LOW 26CWE-1427Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Strands Agents Tools from 0.1.0 before 0.8.6 by Amazon has an improper neutralization of input used for LLM prompting (CWE-1427) in its environment tool. A remote actor can send a crafted prompt that disables the tool's secret masking, exposing the agent host's environment variables in cleartext, including cloud credentials and API keys. The vendor's advisory describes user interaction as required, with the attacker needing no privileges.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Improper neutralization of input used for LLM prompting in the environment tool in Strands Agents Tools before 0.8.6 might allow remote actors to obtain the agent host's environment variables in cleartext, including cloud credentials and API keys, via a crafted prompt that disables the tool's secret masking. To remediate this issue, users should upgrade to version 0.8.6 or later and rotate any credentials that were present in the environment of agents that loaded the environment tool.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00343 27th percentileScored 2026-11-07
Fix Fixed strands-agents-tools (amazon): 0.8.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AWSstrands-agents-tools0.1.0 to before 0.8.60.8.6Patch availableCNA
  • strands-agents-tools VendorAWS Affected 0.1.0 to before 0.8.6 Fixed in 0.8.6 Patch available CNA

Remediation

Upgrade strands-agents-tools to version 0.8.6 or later. Rotate any credentials that were present in the environment of agents that loaded the environment tool.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA strands-agents-tools (amazon) Fixed in 0.8.6

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-115415
  2. 2026-10-30 Priority changed: MEDIUM → LOW
  3. 2026-11-05 CISA SSVC decision points changed

References

Patch 1

Advisory 2

  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2024-18648 Amazon AWS Amplify CLI before 12.10.1 incorrectly configures the role trust policy of IAM… CVSS 3.1CRITICAL 9.8
  • TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
  • TI-2025-03847 Input validation issue in AWS Amplify Studio UI component properties CVSS 4.0CRITICAL 9.0
  • TI-2026-11603 HTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAF CVSS 4.0HIGH 7.9
See all 383 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences