Answer in brief
CVE-2026-53957 records a High severity (CVSS 7.7) vulnerability in Contentful MCP Server: export_space/import_space tools pass LLM-controlled `host`/`proxy` args to CMA client, redirecting server PAT to attacker-controlled endpoint. The current sources do not mark it as known exploited. The current feed maps contentful/contentful-mcp-server (generic), @contentful/mcp-server (generic), @contentful/mcp-tools (generic), @contentful/mcp-server (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.7. 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.
The current feed maps contentful/contentful-mcp-server (generic), @contentful/mcp-server (generic), @contentful/mcp-tools (generic), @contentful/mcp-server (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| contentful/contentful-mcp-servergeneric | < 1.7.19 | Not reported |
| @contentful/mcp-servergeneric | < 1.7.19 | Not reported |
| @contentful/mcp-toolsgeneric | < 0.4.5 | Not reported |
| @contentful/mcp-servernpm | >=0 <1.7.19 | 1.7.19 |
| @contentful/mcp-servernpm | <1.7.19 | 1.7.19 |
| @contentful/mcp-toolsnpm | >=0 <0.4.5 | 0.4.5 |
| @contentful/mcp-toolsnpm | <0.4.5 | 0.4.5 |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 19, 2026
Contentful MCP Server is a Model Context Protocol server for the Contentful Management API. Prior to @contentful/mcp-server 1.7.19 and @contentful/mcp-tools 0.4.5, export_space and import_space in packages/mcp-tools/src/tools/jobs/space-to-space-migration/exportSpace.ts and packages/mcp-tools/src/tools/jobs/space-to-space-migration/importSpace.ts expose host, proxy, rawProxy, and insecure network options to LLM-controlled tool arguments and combine those options with the server's CONTENTFUL_MANAGEMENT_TOKEN. After space_to_space_migration_handler enables the migration tools, a direct MCP call or prompt injection through attacker-controlled Contentful content can redirect Contentful Management API requests and their Authorization header to an attacker-controlled host or proxy. The regular tools that use createToolClient are unaffected because those tools pin the host from server configuration. Exposure of the personal access token permits persistent out-of-band access to every Contentful space within the token's scope. This issue is fixed in @contentful/mcp-server 1.7.19 and @contentful/mcp-tools 0.4.5.
Quoted source text, attributed separately from HOL analysis.