{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-123862 in the wild and no public exploit code.","exposure":"An affected version is only exploitable if your software calls zlib.params() or deflate.params(). Many projects that include it are not exposed.","fix":"No fix published yet.","what":"CVE-2026-123862 is a low-severity denial of service vulnerability in nodejs node, published on 11 Nov 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-2026-123862 and fix it if it is affected.\n\nWhat it is: CVE-2026-123862 is a low-severity denial of service vulnerability in nodejs node, published on 11 Nov 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-2026-123862 in the wild and no public exploit code.\nExposure: An affected version is only exploitable if your software calls zlib.params() or deflate.params(). Many projects that include it are not exposed.\n\nAffected product: nodejs node. No package-level version data is available, so check the vendor advisory linked from the reference page.\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.\n   If an affected version is present, also search the code for calls to zlib.params() or deflate.params() and report whether any exist.\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-2026-123862/ (Markdown: https://insights.sbomify.com/CVE-2026-123862/index.md)","id":"CVE-2026-123862","markdown":"https://insights.sbomify.com/CVE-2026-123862/index.md","name":"CVE-2026-123862","record":{"aliases":["ALPINE-CVE-2026-123862","BELL-CVE-2026-123862","DEBIAN-CVE-2026-123862","GHSA-827v-4jh3-rppr","UBUNTU-CVE-2026-123862"],"analysis":{"component_type":"library","exploitable_when_present":false,"fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"JavaScript runtime","requires_auth":"none","requires_specific_call":true,"summary":"A peer disconnecting during zlib streaming can crash Node.js processes that call deflate.params() while streaming.","user_interaction":"not_required","vuln_class":"denial_of_service","vulnerable_functions":["zlib.params()","deflate.params()"]},"analysis_generated_by":"sbomify/insights-2b-fp8","assigner":"openjs","cpe":[],"cvss":{"score":2.9,"severity":"low","source":"cna","vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.0"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"An uncatchable exception in the Node.js zlib streaming API lets a peer crash a process by disconnecting while data is being compressed. zlib.params() queues a flush and completes its work in that write's callback; if the stream is destroyed first, as pipeline() does when the peer goes away, Writable still invokes the callback with an error, but the callback ignores its arguments and asserts that the native handle still exists. The handle is gone, so an ERR_INTERNAL_ASSERTION is thrown from inside stream internals and bypasses the stream's error event, the params() callback, and the pipeline() callback, terminating the process. An application is affected only if it calls deflate.params() while streaming to a peer, which is uncommon. This vulnerability affects Node.js 26.x, 24.x, and 22.x.","ecosystems":[],"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":"Node.js is vulnerable to a zlib denial of service via a stream destroy during a pending params() call","id":"CVE-2026-123862","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Node.js is vulnerable to a remote HTTP/2 denial of service via a reachable assertion in Http2Session teardown","id":"CVE-2026-123863"},"nickname":null,"packages":[],"prev":{"headline":"Authorization Bypass Through User-Controlled Key vulnerability in CrocoBlock JetFormBuilder – Hierarchical Select jet-form-builder-hierarchi","id":"CVE-2026-123861"},"products":["node"],"published":"2026-11-11","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-11-11","vendors":["nodejs"]},"summary":"A peer disconnecting during zlib streaming can crash Node.js processes that call deflate.params() while streaming.","url":"https://insights.sbomify.com/CVE-2026-123862/"}