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CVE-2026-61891

🗓️ 05 Aug 2026 11:03:01Reported by eclipseType 
cve
 cve
🔗 web.nvd.nist.gov👁 67 Views🌐 WEB

CVE-2026-61891: Theia up to 1.73.1 exposes unauthenticated file downloads via /file and /files/.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-61891
5 Aug 202611:03
–attackerkb
circl
Circl
CVE-2026-61891
5 Aug 202614:34
–circl
cvelist
Cvelist
CVE-2026-61891
5 Aug 202611:03
–cvelist
euvd
EUVD
EUVD-2026-53327
5 Aug 202611:03
–euvd
nvd
NVD
CVE-2026-61891
5 Aug 202612:18
–nvd
ptsecurity
Positive Technologies
PT-2026-68121
5 Aug 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-61891: Improper Limitation of a Pathname to a Restricted Directory
5 Aug 202600:00
–rapid7
vulnrichment
Vulnrichment
CVE-2026-61891
5 Aug 202611:03
–vulnrichment
NVD
Vulners
Node
eclipsetheiaRange<1.74.0
[
  {
    "vendor": "Eclipse Foundation",
    "product": "Eclipse Theia",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "1.74.0",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
ParameterPositionPathDescriptionCWE
uriquery param/fileThe server converts a client-supplied URI into a filesystem path and streams the file without restricting to the workspace or allowed roots, allowing unauthorized access to sensitive files.CWE-200, CWE-22, CWE-306, CWE-36
uriquery param/files/GET /files/ accepts a client-supplied URI and streams the corresponding file, enabling reading arbitrary files the backend process can access.CWE-200, CWE-22, CWE-306, CWE-36
urirequest body/files/PUT /files/ accepts a client-supplied URI in the request body to fetch/stream a file, bypassing workspace confinement and enabling unauthorized access to local files.CWE-200, CWE-22, CWE-306, CWE-36

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07 Aug 2026 15:48Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.5
EPSS0.00533
SSVC
67