{"answers":{"affected":"3 open source packages ship an affected version, including zeroconf. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-48487 in the wild and no public exploit code.","fix":"Upgrade zeroconf to 0.149.16 or later.","what":"CVE-2026-48487 is a medium-severity 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-2026-48487 and fix it if it is affected.\n\nWhat it is: CVE-2026-48487 is a medium-severity 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-2026-48487 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zeroconf (PyPI): affected all versions; fixed in 0.149.16\n- zeroconf (PyPI): affected all versions; fixed in 0.149.16\n- zeroconf (PyPI): affected all versions; fixed in 0.149.16\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-2026-48487/ (Markdown: https://insights.sbomify.com/CVE-2026-48487/index.md)","id":"CVE-2026-48487","markdown":"https://insights.sbomify.com/CVE-2026-48487/index.md","name":"CVE-2026-48487","record":{"aliases":["DEBIAN-CVE-2026-48487","GHSA-qc2x-6f54-m6h9","OESA-2026-2832","OESA-2026-2833","PYSEC-2026-3438","UBUNTU-CVE-2026-48487","openSUSE-SU-2026:11036-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify"],"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 corrupt the mDNS cache by sending crafted packets with invalid record lengths, potentially disrupting service discovery.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zeroconf","vendor":"paulsm"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-130","name":"Improper Handling of Length Parameter Inconsistency"}],"description":"Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.16, _read_character_string and _read_string in src/zeroconf/_protocol/incoming.py advanced self.offset by attacker-declared RDLENGTH without checking it against self._data_len, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to send a TXT, HINFO, or A/AAAA record with rdlength=65535 and seed DNSCache and ServiceInfo.properties with truncated, attacker-shaped key/value or address records. This issue is fixed in version 0.149.16.","ecosystems":["PyPI","openSUSE:Tumbleweed"],"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: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet","id":"CVE-2026-48487","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"other","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"phpMyFAQ has Weak Cryptography - SHA1 for Password Hashing","id":"CVE-2026-48488"},"packages":[{"ecosystem":"PyPI","fixed":["0.149.16"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":null,"source":"GHSA-qc2x-6f54-m6h9"},{"ecosystem":"PyPI","fixed":["0.149.16"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":"pkg:pypi/zeroconf","source":"GHSA-qc2x-6f54-m6h9"},{"ecosystem":"PyPI","fixed":["0.149.16"],"introduced":["0"],"last_affected":[],"package":"zeroconf","purl":"pkg:pypi/zeroconf","source":"PYSEC-2026-3438"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["0.149.16-1.1"],"introduced":["0"],"last_affected":[],"package":"python-zeroconf","purl":"pkg:rpm/opensuse/python-zeroconf\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11036-1"}],"prev":{"headline":"Signum Node: Integer overflow in SMART_FEES fee distribution allows arbitrary miner reward inflation","id":"CVE-2026-48486"},"products":["python-zeroconf"],"published":"2026-07-17","related":[{"cvss_score":6.5,"headline":"Zeroconf: Unbounded recursion in DNS compression-pointer decoder allows LAN-local denial of service","id":"CVE-2026-47180","kev_date_added":null,"published":"2026-07-17"},{"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"}],"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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-07-20","vendors":["python-zeroconf"]},"summary":"An attacker on the local network can corrupt the mDNS cache by sending crafted packets with invalid record lengths, potentially disrupting service discovery.","url":"https://insights.sbomify.com/CVE-2026-48487/"}