CVE-2026-76833

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Source
https://cve.org/CVERecord?id=CVE-2026-76833
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76833.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-76833
Published
2026-08-20T13:33:14Z
Modified
2026-08-22T03:49:48Z
Severity
  • 8.4 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
@cgauge/yaml npm Package Arbitrary Code Execution via eval() YAML Tag
Details

@cgauge/yaml npm package contains an arbitrary code execution vulnerability that allows attackers to execute arbitrary JavaScript by embedding a custom !js YAML tag whose construct callback unconditionally calls eval() on attacker-supplied string values during document parsing. Any application parsing untrusted YAML input with this library exposes full Node.js runtime authority, including environment variable access, filesystem read/write, network access, and subprocess execution, with no safe-mode alternative or opt-out mechanism available.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-95"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/76xxx/CVE-2026-76833.json"
}
References

Affected packages

Git / github.com/cgauge/packages

Affected ranges

Type
GIT
Repo
https://github.com/cgauge/packages
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
3587ef66d4862540ed86fc6072b3e08406e1b227
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0.27.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.1.0
0.1.1
0.1.2
0.1.3
0.1.4
0.1.5
0.10.0
0.10.1
0.10.2
0.10.3
0.10.4
0.10.5
0.10.6
0.10.7
0.11.0
0.12.0
0.12.1
0.13.0
0.14.0
0.15.0
0.15.1
0.15.2
0.15.3
0.15.4
0.16.0
0.17.0
0.17.1
0.17.2
0.17.3
0.18.0
0.19.0
0.2.0
0.2.1
0.2.2
0.20.0
0.21.0
0.22.0
0.23.0
0.24.0
0.25.0
0.26.0
0.27.0
0.3.0
0.3.1
0.4.0
0.5.0
0.6.0
0.7.0
0.7.1
0.8.0
0.8.1
0.8.2
0.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-76833.json"