{"schema_version":1,"title":"github.com/quic-go/webtransport-go (Go) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in github.com/quic-go/webtransport-go (Go): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-57497, was published on 14 September 2026.","url":"https://junglewise.ai/threats/technologies/github-com-quic-go-webtransport-go","json_url":"https://junglewise.ai/threats/technologies/github-com-quic-go-webtransport-go.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/github-com-quic-go-webtransport-go","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":4,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-57497","cvss":5.3,"epss":0.0052,"slug":"cve-2026-57497-quic-go-webtransport-go-memory-exhaustion-in-capsule-parsing","title":"webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknow","severity":"medium","exploited":false,"published_at":"2026-09-14T17:17:49.097+00:00","url":"https://junglewise.ai/threats/cve-2026-57497-quic-go-webtransport-go-memory-exhaustion-in-capsule-parsing"},{"cve":"CVE-2026-21434","cvss":3.1,"epss":0.0043,"slug":"cve-2026-21434-webtransport-go-memory-exhaustion-attack-due-to-missing-length","title":"GO-2026-4485 - webtransport-go: Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-19T17:28:55+00:00","url":"https://junglewise.ai/threats/cve-2026-21434-webtransport-go-memory-exhaustion-attack-due-to-missing-length"},{"cve":"CVE-2026-21435","cvss":3.1,"epss":0.0043,"slug":"cve-2026-21435-webtransport-go-closewitherror-can-block-indefinitely","title":"GO-2026-4488 - webtransport-go: CloseWithError can block indefinitely in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-17T18:09:06+00:00","url":"https://junglewise.ai/threats/cve-2026-21435-webtransport-go-closewitherror-can-block-indefinitely"},{"cve":"CVE-2026-21438","cvss":3.1,"epss":0.0038,"slug":"cve-2026-21438-webtransport-go-memory-exhaustion-attack-due-to-missing-cleanup","title":"GO-2026-4483 - webtransport-go: Memory Exhaustion Attack due to Missing Cleanup of Streams Map in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-17T18:09:06+00:00","url":"https://junglewise.ai/threats/cve-2026-21438-webtransport-go-memory-exhaustion-attack-due-to-missing-cleanup"}],"weekly":[{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"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":1},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"github.com/mattermost/mattermost-server (Go)","slug":"github-com-mattermost-mattermost-server","vulnerabilities":274,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server"},{"name":"github.com/mattermost/mattermost-server/v6 (Go)","slug":"github-com-mattermost-mattermost-server-v6","vulnerabilities":188,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v6"},{"name":"github.com/mattermost/mattermost-server/v5 (Go)","slug":"github-com-mattermost-mattermost-server-v5","vulnerabilities":186,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v5"},{"name":"github.com/mattermost/mattermost/server/v8 (Go)","slug":"github-com-mattermost-mattermost-server-v8","vulnerabilities":182,"url":"https://junglewise.ai/threats/technologies/github-com-mattermost-mattermost-server-v8"},{"name":"stdlib (Go)","slug":"go-stdlib","vulnerabilities":161,"url":"https://junglewise.ai/threats/technologies/go-stdlib"},{"name":"github.com/siyuan-note/siyuan/kernel (Go)","slug":"github-com-siyuan-note-siyuan-kernel","vulnerabilities":158,"url":"https://junglewise.ai/threats/technologies/github-com-siyuan-note-siyuan-kernel"},{"name":"code.gitea.io/gitea (Go)","slug":"code-gitea-io-gitea","vulnerabilities":128,"url":"https://junglewise.ai/threats/technologies/code-gitea-io-gitea"},{"name":"gogs.io/gogs (Go)","slug":"gogs-io-gogs","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/gogs-io-gogs"},{"name":"github.com/traefik/traefik (Go)","slug":"github-com-traefik-traefik","vulnerabilities":75,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik"},{"name":"github.com/usememos/memos (Go)","slug":"github-com-usememos-memos","vulnerabilities":75,"url":"https://junglewise.ai/threats/technologies/github-com-usememos-memos"},{"name":"github.com/traefik/traefik/v2 (Go)","slug":"github-com-traefik-traefik-v2","vulnerabilities":73,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v2"},{"name":"github.com/traefik/traefik/v3 (Go)","slug":"github-com-traefik-traefik-v3","vulnerabilities":68,"url":"https://junglewise.ai/threats/technologies/github-com-traefik-traefik-v3"}],"technology":{"hub":true,"name":"github.com/quic-go/webtransport-go (Go)","slug":"github-com-quic-go-webtransport-go","vendor":{"name":"Go","slug":"go","url":"https://junglewise.ai/threats/vendors/go"},"aliases":[],"homepage":"https://github.com/quic-go/webtransport-go","repo_url":"https://github.com/quic-go/webtransport-go","description":"A Go implementation of the WebTransport protocol over HTTP/3.","url":"https://junglewise.ai/threats/technologies/github-com-quic-go-webtransport-go"},"most_severe":[{"cve":"CVE-2026-57497","cvss":5.3,"epss":0.0052,"slug":"cve-2026-57497-quic-go-webtransport-go-memory-exhaustion-in-capsule-parsing","title":"webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknow","severity":"medium","exploited":false,"published_at":"2026-09-14T17:17:49.097+00:00","url":"https://junglewise.ai/threats/cve-2026-57497-quic-go-webtransport-go-memory-exhaustion-in-capsule-parsing"},{"cve":"CVE-2026-21434","cvss":3.1,"epss":0.0043,"slug":"cve-2026-21434-webtransport-go-memory-exhaustion-attack-due-to-missing-length","title":"GO-2026-4485 - webtransport-go: Memory Exhaustion Attack due to Missing Length Check in WT_CLOSE_SESSION Capsule in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-19T17:28:55+00:00","url":"https://junglewise.ai/threats/cve-2026-21434-webtransport-go-memory-exhaustion-attack-due-to-missing-length"},{"cve":"CVE-2026-21435","cvss":3.1,"epss":0.0043,"slug":"cve-2026-21435-webtransport-go-closewitherror-can-block-indefinitely","title":"GO-2026-4488 - webtransport-go: CloseWithError can block indefinitely in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-17T18:09:06+00:00","url":"https://junglewise.ai/threats/cve-2026-21435-webtransport-go-closewitherror-can-block-indefinitely"},{"cve":"CVE-2026-21438","cvss":3.1,"epss":0.0038,"slug":"cve-2026-21438-webtransport-go-memory-exhaustion-attack-due-to-missing-cleanup","title":"GO-2026-4483 - webtransport-go: Memory Exhaustion Attack due to Missing Cleanup of Streams Map in github.com/quic-go/webtransport-go","severity":"low","exploited":false,"published_at":"2026-02-17T18:09:06+00:00","url":"https://junglewise.ai/threats/cve-2026-21438-webtransport-go-memory-exhaustion-attack-due-to-missing-cleanup"}],"generated_at":"2026-09-28T03:07:00.154823+00:00"}