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In Eclipse Theia versions up to and including 1.73.1, the `@theia/filesystem` backend exposes HTTP file-download endpoints (`GET /file`, `GET /files/`, `PUT /files/`) that convert a client-supplied U…

High CVSS 7.5
CVECVE-2026-61891
First seen2026-08-07 16:15 UTC
Disclosed2026-08-05 12:18 UTC
Last updated2026-08-07 16:15 UTC
Channel statusauto

Summary

In Eclipse Theia versions up to and including 1.73.1, the `@theia/filesystem` backend exposes HTTP file-download endpoints (`GET /file`, `GET /files/`, `PUT /files/`) that convert a client-supplied URI directly to a filesystem path and stream the file, without confining it to the workspace or any allow-listed root. In browser (non-Electron) deployments the connection token is enforced only on WebSocket upgrades; the HTTP middleware in `@theia/core` re-issues the cookie and calls `next()` withou…

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

  • :
Lint boundary warnings (2)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://gitlab.eclipse.org/security/cve-assignment/-/work_items/176
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/570

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD