CVE-2026-107299
- Source
- https://cve.org/CVERecord?id=CVE-2026-107299
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107299.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-107299
- Aliases
- Downstream
- Published
- 2026-10-08T17:09:47Z
- Modified
- 2026-10-28T02:30:56Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- msgpack5: Reserved byte can cause unbounded stream buffering
- Details
-
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder treats the reserved MessagePack byte 0xc1 as incomplete input instead of invalid input. When 0xc1 begins a stream, subsequent data remains buffered while the decoder waits for bytes that cannot make the value valid, allowing a remote peer to exhaust memory. This issue is fixed in version 6.1.0.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-228" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107299.json" }- References
-
- https://github.com/mcollina/msgpack5/releases/tag/v6.1.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107299.json
- https://github.com/mcollina/msgpack5/security/advisories/GHSA-26wq-p25c-j6fv
- https://nvd.nist.gov/vuln/detail/CVE-2026-107299
- https://github.com/mcollina/msgpack5/commit/85da345bf1acc18ca441741e5cf4aa0ed0d69314
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": "85da345bf1acc18ca441741e5cf4aa0ed0d69314" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v6.1.0", "range": [ { "fixed": "3730a5a754ec06912e42865eed9489ed64238ecb" } ], "source": "REFERENCES_TAG" } ] }