{"schema_version":1,"title":"msgpack5 (npm) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 8 vulnerabilities in msgpack5 (npm): 0 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-107302, was published on 8 October 2026. Nothing in the last four weeks, down from 7 vulnerabilities in the four before.","url":"https://junglewise.ai/threats/technologies/msgpack5","json_url":"https://junglewise.ai/threats/technologies/msgpack5.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/msgpack5","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","thin":false,"counts":{"high":2,"all_time":8,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":7,"last_365_days":7},"latest":[{"cve":"CVE-2026-107302","cvss":7.5,"epss":0.0043,"slug":"cve-2026-107302-msgpack5-truncated-map32-headers-throw-an-unexpected-error","title":"msgpack5 out-of-bounds read in truncated map32 header","severity":"high","exploited":false,"published_at":"2026-10-08T18:17:19.1+00:00","url":"https://junglewise.ai/threats/cve-2026-107302-msgpack5-truncated-map32-headers-throw-an-unexpected-error"},{"cve":"CVE-2026-107300","cvss":7.5,"slug":"cve-2026-107300-msgpack5-many-buffered-values-can-exhaust-the-streaming-decoder","title":"msgpack5 uncontrolled recursion in streaming decoder","severity":"high","exploited":false,"published_at":"2026-10-08T17:40:06+00:00","url":"https://junglewise.ai/threats/cve-2026-107300-msgpack5-many-buffered-values-can-exhaust-the-streaming-decoder"},{"cve":"CVE-2026-107299","cvss":5.9,"slug":"cve-2026-107299-msgpack5-reserved-byte-can-cause-unbounded-stream-buffering","title":"msgpack5 unbounded stream buffering via reserved byte","severity":"medium","exploited":false,"published_at":"2026-10-08T17:40:01+00:00","url":"https://junglewise.ai/threats/cve-2026-107299-msgpack5-reserved-byte-can-cause-unbounded-stream-buffering"},{"cve":"CVE-2026-107301","cvss":6.5,"slug":"cve-2026-107301-msgpack5-partial-options-disable-prototype-protection","title":"msgpack5 prototype pollution via partial options","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:57+00:00","url":"https://junglewise.ai/threats/cve-2026-107301-msgpack5-partial-options-disable-prototype-protection"},{"cve":"CVE-2026-107298","cvss":5.3,"slug":"cve-2026-107298-msgpack5-deeply-nested-input-can-exhaust-the-decoder-stack","title":"msgpack5 uncontrolled recursion in decoder","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:51+00:00","url":"https://junglewise.ai/threats/cve-2026-107298-msgpack5-deeply-nested-input-can-exhaust-the-decoder-stack"},{"cve":"CVE-2026-107297","cvss":5.9,"slug":"cve-2026-107297-msgpack5-quadratic-parsing-in-the-streaming-decoder","title":"msgpack5 quadratic parsing in streaming decoder","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:46+00:00","url":"https://junglewise.ai/threats/cve-2026-107297-msgpack5-quadratic-parsing-in-the-streaming-decoder"},{"cve":"CVE-2026-107296","cvss":3.7,"slug":"cve-2026-107296-msgpack5-decoding-negative-int64-values-mutates-the-input-buffer","title":"msgpack5: Decoding negative int64 values mutates the input buffer","severity":"low","exploited":false,"published_at":"2026-10-08T17:39:30+00:00","url":"https://junglewise.ai/threats/cve-2026-107296-msgpack5-decoding-negative-int64-values-mutates-the-input-buffer"},{"cve":"CVE-2021-21368","cvss":3.1,"epss":0.0165,"slug":"cve-2021-21368-msgpack5-prototype-poisoning-in-map-decoding","title":"msgpack5 prototype poisoning in map decoding","severity":"low","exploited":false,"published_at":"2021-03-12T22:44:17+00:00","url":"https://junglewise.ai/threats/cve-2021-21368-msgpack5-prototype-poisoning-in-map-decoding"}],"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":7},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"openclaw (npm)","slug":"npm-openclaw","vulnerabilities":214,"url":"https://junglewise.ai/threats/technologies/npm-openclaw"},{"name":"flowise (npm)","slug":"flowise","vulnerabilities":133,"url":"https://junglewise.ai/threats/technologies/flowise"},{"name":"parse-server (npm)","slug":"parse-server","vulnerabilities":117,"url":"https://junglewise.ai/threats/technologies/parse-server"},{"name":"vm2 (npm)","slug":"vm2","vulnerabilities":111,"url":"https://junglewise.ai/threats/technologies/vm2"},{"name":"electron (npm)","slug":"electron","vulnerabilities":77,"url":"https://junglewise.ai/threats/technologies/electron"},{"name":"ghost (npm)","slug":"ghost","vulnerabilities":74,"url":"https://junglewise.ai/threats/technologies/ghost"},{"name":"n8n (npm)","slug":"npm-n8n","vulnerabilities":64,"url":"https://junglewise.ai/threats/technologies/npm-n8n"},{"name":"hono (npm)","slug":"hono","vulnerabilities":62,"url":"https://junglewise.ai/threats/technologies/hono"},{"name":"directus (npm)","slug":"directus","vulnerabilities":61,"url":"https://junglewise.ai/threats/technologies/directus"},{"name":"nocodb (npm)","slug":"nocodb","vulnerabilities":54,"url":"https://junglewise.ai/threats/technologies/nocodb"},{"name":"undici (npm)","slug":"undici","vulnerabilities":53,"url":"https://junglewise.ai/threats/technologies/undici"},{"name":"@budibase/server (npm)","slug":"budibase-server","vulnerabilities":42,"url":"https://junglewise.ai/threats/technologies/budibase-server"}],"technology":{"hub":true,"name":"msgpack5 (npm)","slug":"msgpack5","vendor":{"hub":true,"name":"npm","slug":"npm","url":"https://junglewise.ai/threats/vendors/npm"},"aliases":[],"description":"JavaScript implementation of the MessagePack binary serialization format.","url":"https://junglewise.ai/threats/technologies/msgpack5"},"most_severe":[{"cve":"CVE-2026-107302","cvss":7.5,"epss":0.0043,"slug":"cve-2026-107302-msgpack5-truncated-map32-headers-throw-an-unexpected-error","title":"msgpack5 out-of-bounds read in truncated map32 header","severity":"high","exploited":false,"published_at":"2026-10-08T18:17:19.1+00:00","url":"https://junglewise.ai/threats/cve-2026-107302-msgpack5-truncated-map32-headers-throw-an-unexpected-error"},{"cve":"CVE-2026-107300","cvss":7.5,"slug":"cve-2026-107300-msgpack5-many-buffered-values-can-exhaust-the-streaming-decoder","title":"msgpack5 uncontrolled recursion in streaming decoder","severity":"high","exploited":false,"published_at":"2026-10-08T17:40:06+00:00","url":"https://junglewise.ai/threats/cve-2026-107300-msgpack5-many-buffered-values-can-exhaust-the-streaming-decoder"},{"cve":"CVE-2026-107301","cvss":6.5,"slug":"cve-2026-107301-msgpack5-partial-options-disable-prototype-protection","title":"msgpack5 prototype pollution via partial options","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:57+00:00","url":"https://junglewise.ai/threats/cve-2026-107301-msgpack5-partial-options-disable-prototype-protection"},{"cve":"CVE-2026-107299","cvss":5.9,"slug":"cve-2026-107299-msgpack5-reserved-byte-can-cause-unbounded-stream-buffering","title":"msgpack5 unbounded stream buffering via reserved byte","severity":"medium","exploited":false,"published_at":"2026-10-08T17:40:01+00:00","url":"https://junglewise.ai/threats/cve-2026-107299-msgpack5-reserved-byte-can-cause-unbounded-stream-buffering"},{"cve":"CVE-2026-107297","cvss":5.9,"slug":"cve-2026-107297-msgpack5-quadratic-parsing-in-the-streaming-decoder","title":"msgpack5 quadratic parsing in streaming decoder","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:46+00:00","url":"https://junglewise.ai/threats/cve-2026-107297-msgpack5-quadratic-parsing-in-the-streaming-decoder"},{"cve":"CVE-2026-107298","cvss":5.3,"slug":"cve-2026-107298-msgpack5-deeply-nested-input-can-exhaust-the-decoder-stack","title":"msgpack5 uncontrolled recursion in decoder","severity":"medium","exploited":false,"published_at":"2026-10-08T17:39:51+00:00","url":"https://junglewise.ai/threats/cve-2026-107298-msgpack5-deeply-nested-input-can-exhaust-the-decoder-stack"},{"cve":"CVE-2026-107296","cvss":3.7,"slug":"cve-2026-107296-msgpack5-decoding-negative-int64-values-mutates-the-input-buffer","title":"msgpack5: Decoding negative int64 values mutates the input buffer","severity":"low","exploited":false,"published_at":"2026-10-08T17:39:30+00:00","url":"https://junglewise.ai/threats/cve-2026-107296-msgpack5-decoding-negative-int64-values-mutates-the-input-buffer"},{"cve":"CVE-2021-21368","cvss":3.1,"epss":0.0165,"slug":"cve-2021-21368-msgpack5-prototype-poisoning-in-map-decoding","title":"msgpack5 prototype poisoning in map decoding","severity":"low","exploited":false,"published_at":"2021-03-12T22:44:17+00:00","url":"https://junglewise.ai/threats/cve-2021-21368-msgpack5-prototype-poisoning-in-map-decoding"}],"generated_at":"2026-11-13T03:07:00.155039+00:00"}