markdoc-1.0.5.tgz: 1 vulnerabilities (highest severity is: 5.3)

[mend-for-github-com]

Vulnerable Library - markdoc-1.0.5.tgz

Path to dependency file: /tutorials/package.json

Path to vulnerable library: /tutorials/video-javascript-signaling/project/package.json,/sources/video_learning_server-node-deploy/package.json,/sources/video-javascript-one_to_one/package.json,/tutorials/package.json,/sources/video-javascript-signaling/package.json,/sources/vonage_video_react_app-local-setup/package.json,/tutorials/video_learning_server-node-deploy/package.json,/tutorials/video-javascript-debugging/project/package.json,/sources/video-javascript-archive_layouts/package.json,/tutorials/vonage_video_react_app-feature-config/package.json,/tutorials/video-javascript-archive_layouts/package.json,/tutorials/video-javascript-archive_layouts/project/package.json,/sources/voice-javascript-workshop/package.json,/tutorials/vonage_video_react_app-local-setup/package.json,/sources/video-javascript-multiparty/package.json,/tutorials/voice-javascript-workshop/package.json,/tutorials/webxr-javascript-workshop/package.json,/tutorials/voice-node-app_to_app/package.json,/sources/verify-android-silent_auth/package.json,/tutorials/video_learning_server-node-deploy/project/package.json,/sources/video-javascript-multiparty_archiving/package.json,/sources/advanced-video-core-api-features/package.json,/sources/video-javascript-debugging/package.json,/sources/webxr-javascript-workshop/package.json,/tutorials/video-javascript-multiparty/package.json,/tutorials/video-javascript-debugging/package.json,/tutorials/verify-android-silent_auth/package.json,/sources/vonage_video_react_app-feature-config4/package.json,/tutorials/video-javascript-one_to_one/package.json,/tutorials/video-javascript-multiparty_archiving/project/package.json,/toolbar-app/package.json,/tutorials/verify-backend/package.json,/tutorials/advanced-video-core-api-features/package.json,/tutorials/video-javascript-multiparty_archiving/package.json,/sources/vonage_video_react_app-feature-config/package.json,/tutorials/video-javascript-signaling/package.json

Found in HEAD commit: f400f39c07df86338418f7902a27a7c22c1442b4

Vulnerabilities

Vulnerability	Severity	CVSS	Dependency	Type	Fixed in (markdoc version)	Remediation Possible**
CVE-2026-53550	Medium	5.3	js-yaml-4.1.1.tgz	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2026-53550

Vulnerable Library - js-yaml-4.1.1.tgz

YAML 1.2 parser and serializer

Library home page: https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz

Path to dependency file: /tutorials/video-javascript-signaling/project/package.json

Path to vulnerable library: /tutorials/video-javascript-signaling/project/package.json,/sources/video_learning_server-node-deploy/package.json,/sources/video-javascript-one_to_one/package.json,/tutorials/package.json,/sources/video-javascript-signaling/package.json,/sources/vonage_video_react_app-local-setup/package.json,/tutorials/video_learning_server-node-deploy/package.json,/tutorials/video-javascript-debugging/project/package.json,/sources/video-javascript-archive_layouts/package.json,/tutorials/vonage_video_react_app-feature-config/package.json,/tutorials/video-javascript-archive_layouts/package.json,/tutorials/video-javascript-archive_layouts/project/package.json,/sources/voice-javascript-workshop/package.json,/tutorials/vonage_video_react_app-local-setup/package.json,/sources/video-javascript-multiparty/package.json,/tutorials/voice-javascript-workshop/package.json,/tutorials/webxr-javascript-workshop/package.json,/tutorials/voice-node-app_to_app/package.json,/sources/verify-android-silent_auth/package.json,/tutorials/video_learning_server-node-deploy/project/package.json,/sources/video-javascript-multiparty_archiving/package.json,/sources/advanced-video-core-api-features/package.json,/sources/video-javascript-debugging/package.json,/sources/webxr-javascript-workshop/package.json,/tutorials/video-javascript-multiparty/package.json,/tutorials/video-javascript-debugging/package.json,/tutorials/verify-android-silent_auth/package.json,/sources/vonage_video_react_app-feature-config4/package.json,/tutorials/video-javascript-one_to_one/package.json,/tutorials/video-javascript-multiparty_archiving/project/package.json,/toolbar-app/package.json,/tutorials/verify-backend/package.json,/tutorials/advanced-video-core-api-features/package.json,/tutorials/video-javascript-multiparty_archiving/package.json,/sources/vonage_video_react_app-feature-config/package.json,/tutorials/video-javascript-signaling/package.json

Dependency Hierarchy:

• markdoc-1.0.5.tgz (Root Library)
  • markdown-remark-7.1.2.tgz
    • ❌ js-yaml-4.1.1.tgz (Vulnerable Library)

Found in HEAD commit: f400f39c07df86338418f7902a27a7c22c1442b4

Found in base branch: main

Vulnerability Details

js-yaml is a JavaScript YAML parser and dumper. Prior to 4.2.0, a crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing (<<) by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block a Node.js worker/event loop for seconds with a relatively small payload (tens of KB), resulting in denial of service. The issue is in merge handling inside lib/loader.js. This vulnerability is fixed in 4.2.0.

Publish Date: 2026-06-22

URL: CVE-2026-53550

CVSS 3 Score Details (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-06-15

Fix Resolution: https://github.com/nodeca/js-yaml.git - 4.2.0

[mend-for-github-com]

✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[mend-for-github-com]

ℹ️ This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.

[mend-for-github-com]

✔️ This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[mend-for-github-com]

ℹ️ This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.