{"answers":{"affected":"2 open source packages ship an affected version, including neqo-qpack.","exploited":"There is no known exploitation of GHSA-6w86-wgwq-rgq8 in the wild and no public exploit code.","fix":"No fix has been published for GHSA-6w86-wgwq-rgq8 yet. Limit exposure of the affected software until one is available.","what":"GHSA-6w86-wgwq-rgq8 is a vulnerability in neqo-qpack, published on 4 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-6w86-wgwq-rgq8 and fix it if it is affected.\n\nWhat it is: GHSA-6w86-wgwq-rgq8 is a vulnerability in neqo-qpack, published on 4 Mar 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 GHSA-6w86-wgwq-rgq8 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- neqo-qpack (crates.io): affected all versions up to 0.22.2; no fix listed\n- neqo-qpack (crates.io): affected all versions up to 0.22.2; no fix listed\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/GHSA-6w86-wgwq-rgq8/ (Markdown: https://insights.sbomify.com/GHSA-6w86-wgwq-rgq8/index.md)","id":"GHSA-6w86-wgwq-rgq8","markdown":"https://insights.sbomify.com/GHSA-6w86-wgwq-rgq8/index.md","name":"GHSA-6w86-wgwq-rgq8","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"QUIC protocol library","requires_auth":"none","summary":"A malicious remote attacker can cause a QUIC connection to fail or enter an inconsistent state via integer overflow in the neqo-qpack library.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"### Summary\n\nAn unsanitized qpack index can lead to an integer overflow, panicing in debug mode, accessing the wrong or no dynamic table entry in release mode.\n\nWhat does this mean for Firefox? Firefox runs Neqo in release mode. A malicious remote can cause its own QUIC connection to fail to use qpack, i.e. compression, or enter an inconsistent state. The remote can not crash Firefox, nor affect other QUIC connections. \n\n### Details\n\nSee fuzz report in https://github.com/mozilla/neqo/issues/3406.\n\n### PoC\nSee test in pull request.\n\n### Impact\nAll Firefox users. Though vulnerability likely scoped to same connection, i.e. low impact.","ecosystems":["crates.io"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"neqo-qpack has iInteger overflow in qpack dynamic table indexing","id":"GHSA-6w86-wgwq-rgq8","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"crates.io","fixed":[],"introduced":["0"],"last_affected":["0.22.2"],"package":"neqo-qpack","purl":null,"source":"GHSA-6w86-wgwq-rgq8"},{"ecosystem":"crates.io","fixed":[],"introduced":["0"],"last_affected":["0.22.2"],"package":"neqo-qpack","purl":"pkg:cargo/neqo-qpack","source":"GHSA-6w86-wgwq-rgq8"}],"products":null,"published":"2026-03-04","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"A malicious remote attacker can cause a QUIC connection to fail or enter an inconsistent state via integer overflow in the neqo-qpack library.","url":"https://insights.sbomify.com/GHSA-6w86-wgwq-rgq8/"}