{"answers":{"affected":"3 open source packages ship an affected version, including github.com/quic-go/webtransport-go.","exploited":"There is no known exploitation of CVE-2026-57497 in the wild and no public exploit code.","fix":"Upgrade github.com/quic-go/webtransport-go to 0.11.1 or later.","what":"CVE-2026-57497 is a medium-severity denial of service vulnerability in quic-go webtransport-go, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-57497 and fix it if it is affected.\n\nWhat it is: CVE-2026-57497 is a medium-severity denial of service vulnerability in quic-go webtransport-go, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-57497 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/quic-go/webtransport-go (Go): affected all versions; fixed in 0.11.1\n- github.com/quic-go/webtransport-go (Go): affected all versions; fixed in 0.11.1\n- github.com/quic-go/webtransport-go (Go): affected all versions; fixed in 0.11.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-57497/ (Markdown: https://insights.sbomify.com/CVE-2026-57497/index.md)","id":"CVE-2026-57497","markdown":"https://insights.sbomify.com/CVE-2026-57497/index.md","name":"CVE-2026-57497","record":{"aliases":["ECHO-8ef3-5c8a-bcd5","GHSA-g35j-m5xg-vh3q","GO-2026-6099","MINI-5hm4-rwcx-j54q","MINI-6pfh-343q-45x2","MINI-6xrx-4cgv-5x7x","MINI-7j23-pjcq-c493","MINI-7wp7-8r2q-95hq","MINI-9g5f-c95v-mfvw","MINI-gqhm-gfw8-xvw3","MINI-hcwf-55xx-w2pf","MINI-mw7r-mf67-g3jr","MINI-p3x3-c5jf-57ww","MINI-prq3-5hmc-6jj7","MINI-w32j-33v8-mf2w"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go WebTransport library","requires_auth":"none","summary":"A malicious peer can cause memory exhaustion and crash the process by sending large unknown WebTransport capsules in the webtransport-go library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A malicious peer can send a large unknown capsule and cause a client or server to allocate memory for the full payload; QUIC flow control does not bound the total retained allocation because reading advances the flow-control window while the received bytes remain in memory. The resulting memory and resource exhaustion can disrupt or crash the affected process. This issue is fixed in version 0.11.1.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules","id":"CVE-2026-57497","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Missing authorization in coolify","id":"CVE-2026-57498"},"packages":[{"ecosystem":"Go","fixed":["0.11.1"],"introduced":["0"],"last_affected":[],"package":"github.com/quic-go/webtransport-go","purl":null,"source":"GHSA-g35j-m5xg-vh3q"},{"ecosystem":"Go","fixed":["0.11.1"],"introduced":["0"],"last_affected":[],"package":"github.com/quic-go/webtransport-go","purl":"pkg:golang/github.com/quic-go/webtransport-go","source":"GHSA-g35j-m5xg-vh3q"},{"ecosystem":"Go","fixed":["0.11.1"],"introduced":["0"],"last_affected":[],"package":"github.com/quic-go/webtransport-go","purl":"pkg:golang/github.com/quic-go/webtransport-go","source":"GO-2026-6099"}],"prev":{"headline":"NetLicensing MCP Server: REST Path Traversal Bypasses Token Redaction","id":"CVE-2026-57496"},"products":["webtransport-go"],"published":"2026-09-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["quic-go"]},"summary":"A malicious peer can cause memory exhaustion and crash the process by sending large unknown WebTransport capsules in the webtransport-go library.","url":"https://insights.sbomify.com/CVE-2026-57497/"}