[Snyk] Security upgrade @modelcontextprotocol/sdk from 1.25.3 to 1.26.0

[kcburge-formio]

Snyk has created this PR to fix 1 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• package.json
• yarn.lock

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Race Condition SNYK-JS-MODELCONTEXTPROTOCOLSDK-15208843	641

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
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🦉 Race Condition

[kcburge-formio]

This is a minor version upgrade that primarily addresses a high-severity security vulnerability.

Behavioral Change:

• The release fixes a race condition (CVE-2026-25536) that could cause data leakage across different client connections when a single server transport instance is reused.
• The fix introduces new synchronization mechanisms to correct this behavior. While this is a critical security patch, it alters the concurrent behavior of the server and may require verification in environments that reuse server instances.

Recommendation:
This is a crucial security update. After upgrading, verify that server deployments using a shared StreamableHTTPServerTransport instance continue to function as expected under concurrent loads.

Source: NVD CVE-2026-25536 Detail

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.