CVE-2026-107301
- Source
- https://cve.org/CVERecord?id=CVE-2026-107301
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107301.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-107301
- Aliases
- Downstream
- Published
- 2026-10-08T17:13:00Z
- Modified
- 2026-10-28T02:30:24Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L CVSS Calculator
- Summary
- msgpack5: Partial options disable prototype protection
- Details
-
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, constructing msgpack5 with an empty or partial options object disables the default protoAction: 'error' protection. A decoded map containing a proto key can then replace the decoded object's prototype, potentially changing inherited properties or downstream behavior, although Object.prototype is not modified globally. This issue is fixed in version 6.1.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-1321" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107301.json" }- References
-
- https://github.com/mcollina/msgpack5/releases/tag/v6.1.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107301.json
- https://github.com/mcollina/msgpack5/security/advisories/GHSA-8hq7-ggx2-cc6m
- https://nvd.nist.gov/vuln/detail/CVE-2026-107301
- https://github.com/mcollina/msgpack5/commit/20e82600ac9462e679c8a45e5723315f21e2c774
Affected packages
Git / github.com/mcollina/msgpack5
Affected ranges
- Type
- GIT
- Repo
- https://github.com/mcollina/msgpack5
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "6.1.0" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "20e82600ac9462e679c8a45e5723315f21e2c774" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v6.1.0", "range": [ { "fixed": "3730a5a754ec06912e42865eed9489ed64238ecb" } ], "source": "REFERENCES_TAG" } ] }