CVE-2026-60009

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-60009
StatePUBLISHED
Assignereclipse
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-05 11:16:25 UTC
Updated2026-08-07 15:54:02 UTC
DescriptionIn Eclipse Theia versions up to and including 1.73.1, the `@theia/filesystem` backend binds `POST /file-upload` in every filesystem-enabled deployment. The handler takes an attacker-supplied absolute path from the multipart `uri` field and calls `fs.move(tmp, target, { overwrite: true })` with no workspace confinement and no authentication. 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. Because `multipart/form-data` is a CORS-safelisted request type, a cross-origin web page can trigger the write with no preflight and no credentials, resulting in an unauthenticated arbitrary file write outside the workspace to any absolute path the backend process can write. This can escalate to remote code execution, for example by overwriting a startup-executed file such as `~/.bashrc`. Electron mode uses a separate `ElectronSecurityToken` and is not affected via this path.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.003230000 probability, percentile 0.247620000 (date 2026-08-10)

Problem Types: CWE-22 | CWE-73 | CWE-306 | CWE-352 | CWE-352 CWE-352 | CWE-306 CWE-306 | CWE-22 CWE-22 | CWE-73 CWE-73

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNACVSS8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Eclipse Theia All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Eclipse Foundation Eclipse Theia affected 1.74.0 semver Not specified

References

ReferenceSourceLinkTags
gitlab.eclipse.org/security/vulnerability-reports/-/work_items/595 134c704f-9b21-4f2e-91b3-4a467353bcc0 gitlab.eclipse.org Exploit, Mitigation, Vendor Advisory
gitlab.eclipse.org/security/cve-assignment/-/work_items/177 [email protected] gitlab.eclipse.org Vendor Advisory
gitlab.eclipse.org/security/vulnerability-reports/-/issues/595 [email protected] gitlab.eclipse.org Exploit, Mitigation, Vendor Advisory
github.com/eclipse-theia/theia/security/advisories/GHSA-62f6-wcvg-54h3 [email protected] github.com Broken Link
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Shubham Raj (https://gitlab.eclipse.org/causalsecurity) (en)

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