{"answers":{"affected":"3 open source packages ship an affected version, including zeroconf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-47180 in the wild and no public exploit code.","fix":"Upgrade zeroconf to 0.149.5 or later.","what":"CVE-2026-47180 is a medium-severity denial of service vulnerability in python-zeroconf, published on 17 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-47180 and fix it if it is affected.\n\nWhat it is: CVE-2026-47180 is a medium-severity denial of service vulnerability in python-zeroconf, published on 17 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-47180 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zeroconf (PyPI): affected all versions; fixed in 0.149.5\n- zeroconf (PyPI): affected all versions; fixed in 0.149.5\n- zeroconf (PyPI): affected all versions; fixed in 0.149.5\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-2026-47180/ (Markdown: https://insights.sbomify.com/CVE-2026-47180/index.md)","id":"CVE-2026-47180","markdown":"https://insights.sbomify.com/CVE-2026-47180/index.md","name":"CVE-2026-47180","record":{"aliases":["DEBIAN-CVE-2026-47180","GHSA-9pgc-3ccv-5297","PYSEC-2026-3436","UBUNTU-CVE-2026-47180"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python mDNS library","requires_auth":"none","summary":"An attacker on the local network can cause a denial of service in the Zeroconf library by sending crafted mDNS packets that trigger unbounded recursion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zeroconf","vendor":"paulsm"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.5, DNSIncoming._decode_labels_at_offset recurses once per DNS-name compression pointer, and a single mDNS packet carrying chained pointers can trigger a RecursionError that escapes DNSIncoming.__init__, causing sustained CPU burn, log flooding, and degraded mDNS-dependent features for unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb). This issue is fixed in version 0.149.5.","ecosystems":["PyPI"],"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":"Zeroconf: Unbounded recursion in DNS compression-pointer decoder allows LAN-local denial of service","id":"CVE-2026-47180","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"PenguinMod-BackendApi: NoSQL Injection in Password Reset Endpoint Allows Account Takeover","id":"CVE-2026-47181"},"packages":[{"ecosystem":"PyPI","fixed":["0.149.5"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":null,"source":"GHSA-9pgc-3ccv-5297"},{"ecosystem":"PyPI","fixed":["0.149.5"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":"pkg:pypi/zeroconf","source":"GHSA-9pgc-3ccv-5297"},{"ecosystem":"PyPI","fixed":["0.149.5"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":"pkg:pypi/zeroconf","source":"PYSEC-2026-3436"}],"prev":{"headline":"Arcane: Authenticated Arbitrary Host File Read via Docker Compose Include Directives in Arcane","id":"CVE-2026-47179"},"products":["python-zeroconf"],"published":"2026-07-17","related":[{"cvss_score":6.5,"headline":"zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion","id":"CVE-2026-47183","kev_date_added":null,"published":"2026-07-17"},{"cvss_score":6.5,"headline":"Zeroconf: Unbounded DNS record cache allows LAN-local memory exhaustion via multicast flood","id":"CVE-2026-47184","kev_date_added":null,"published":"2026-07-17"},{"cvss_score":6.5,"headline":"Zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood","id":"CVE-2026-48045","kev_date_added":null,"published":"2026-07-17"},{"cvss_score":5.3,"headline":"Zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet","id":"CVE-2026-48487","kev_date_added":null,"published":"2026-07-17"}],"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":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-17","vendors":["python-zeroconf"]},"summary":"An attacker on the local network can cause a denial of service in the Zeroconf library by sending crafted mDNS packets that trigger unbounded recursion.","url":"https://insights.sbomify.com/CVE-2026-47180/"}