Vulnerability · Published Oct 28, 2026 · Assigned by AMZN

CVE-2026-115415Secret masking bypass in the environment tool in Strands Agents Tools

Medium 6.5

In plain English

A medium-severity security flaw in strands-agents-tools from amazon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 72.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
amazon	strands-agents-tools	0.1.0 – before 0.8.6

Weakness: CWE-1427 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

https://github.com/strands-agents/tools/releases#release-v0.8.6 patch, release-notes
https://aws.amazon.com/security/security-bulletins/2026-154-aws/ vendor-advisory
https://github.com/strands-agents/tools/security/advisories/GHSA-qjx4-hg6g-2f34 vendor-advisory