VulnSocial

CVE-2026-61891Disclosure(eclipse / theia)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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()` without rejecting tokenless HTTP requests, so these endpoints are reachable without a valid token. As a result an unauthenticated client can read any file readable by the backend process, including files outside the opened workspace (for example `/etc/hosts`, SSH keys, or tokens). Electron mode uses a separate `ElectronSecurityToken` and is not affected via this path.

eclipse CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-22CWE-36CWE-200CWE-306

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • theia

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
eclipse
Products
theia

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-08-05: 2Technical Details · 2026-08-05: 208-05
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-61891 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/`)… https://www.cve.org/CVERecord?id=CVE-2026-61891 ----- Traducción: CVE-2026-61891 En … http://infoflow.cloud`

    Post summary

    The post discloses CVE‑2026‑61891, highlighting that Eclipse Theia up to version 1.73.1 exposes HTTP file‑download endpoints via the `@theia/filesystem` backend, without providing PoC, exploit code, or patch information.

    0000035
    97 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-61891 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/`)… https://www.cve.org/CVERecord?id=CVE-2026-61891

    Post summary

    The statement announces CVE‑2026‑61891, noting that Eclipse Theia up to 1.73.1 exposes HTTP file‑download endpoints, but provides no evidence of exploitation, PoC, or remediation.

    00000843
    57.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appeclipsetheia---

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