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  4. CVE 2026 102943 dagu mcp dag specification read bypasses path
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Back to active CVEs
Medium · CVSS 6.5CVE-2026-102943

Dagu MCP DAG specification read bypasses path containment and workspace isolationCVE-2026-102943

Answer in brief

CVE-2026-102943 records a Medium severity (CVSS 6.5) vulnerability in Dagu MCP DAG specification read bypasses path containment and workspace isolation. The current sources do not mark it as known exploited. The current feed maps dagucloud/dagu (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 5, 2026Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Nov 5, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps dagucloud/dagu (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
dagucloud/dagugeneric<2.11.02.11.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for dagucloud/dagu.
  2. 2Review the reported fix. Update dagucloud/dagu to 2.11.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

Dagu is a workflow engine with a built-in Web user interface. Prior to version 2.11.0, its MCP  dagu_read  operation with target  dag_spec  invokes the DAG specification API directly, bypassing the HTTP middleware introduced for CVE-2026-33344. The underlying resolver does not restrict resolved paths to configured DAG directories. An authenticated attacker with a viewer-role API key can supply an absolute or traversing path to read  .yaml  or  .yml  files outside those directories that are accessible to the Dagu process. The affected operation does not provide write or execution capability. This issue is fixed in version 2.11.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Model Context Protocol TypeScript SDK: Server bearer authentication accepted tokens issued for another serviceAlso CWE-863
  • FairEmail: Path traversal in shared attachment handling can write files outside the intended shared directoryAlso CWE-22
  • Kubeflow Pipelines: RBAC bypass on shared pipelines allows any authenticated user to delete or modify global pipelinesAlso CWE-863

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-22, CWE-863
Source
CVE List V5
Source checked
Nov 5, 2026
References
4 linked sources
Open source record