CVE-2026-14574

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Source
https://cve.org/CVERecord?id=CVE-2026-14574
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-14574.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-14574
Aliases
  • GHSA-f3w9-qfw3-xr32
Published
2026-08-05T10:51:47.869Z
Modified
2026-08-09T03:45:34.959049571Z
Severity
  • 5.7 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:L/SA:L CVSS Calculator
Summary
[none]
Details

In Eclipse Theia versions 0.7.0 and up until including 1.73.1, the PreferenceUtils.merge function in @theia/core recursively merges preference values without rejecting prototype-related keys (__proto__, constructor, prototype). Because this function is invoked by PreferenceServiceImpl.doResolve for every preference resolution across scopes (default, user, workspace, folder), a crafted preference value in a workspace settings file (.theia/settings.json or .vscode/settings.json) can pollute Object.prototype when the user opens the workspace, potentially altering application logic across the Theia process.

Database specific 
{
    "cna_assigner": "eclipse",
    "cwe_ids": [
        "CWE-1321"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14574.json"
}
References

Affected packages

Git / github.com/eclipse-theia/theia

Affected ranges

Type
GIT
Repo
https://github.com/eclipse-theia/theia
Events
Introduced
b67025d7165c8a3f0b7170efb044263992593813
Fixed
172494ea2564ca07690e230805861146007fae79
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0.7.0"
        },
        {
            "fixed": "1.74.0"
        }
    ],
    "cpe": "cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*",
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

1.*
1.13.0
Other
next
v0.*
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.7.0
v0.8.0
v0.9.0
v1.*
v1.0.0
v1.1.0
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.2.0
v1.20.0
v1.21.0
v1.22.0
v1.22.1
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.28.0
v1.29.0
v1.3.0
v1.30.0
v1.31.0
v1.32.0
v1.33.0
v1.34.0
v1.35.0
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.4.0
v1.40.0
v1.41.0
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.47.0
v1.48.0
v1.49.0
v1.5.0
v1.50.0
v1.52.0
v1.53.0
v1.54.0
v1.55.0
v1.56.0
v1.57.0
v1.58.0
v1.59.0
v1.6.0
v1.60.0
v1.61.0
v1.62.0
v1.63.0
v1.64.0
v1.65.0
v1.66.0
v1.67.0
v1.68.0
v1.69.0
v1.7.0
v1.70.0
v1.71.0
v1.72.0
v1.73.0
v1.8.0
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-14574.json"