{"answers":{"affected":"6 open source packages ship an affected version, including undici. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-109932 in the wild and no public exploit code.","fix":"Upgrade undici to a fixed version for your release line: 6.29.1, 7.30.1 or 8.12.2.","what":"CVE-2026-109932 is a medium-severity denial of service vulnerability in Nodejs Undici, published on 15 Oct 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-2026-109932 and fix it if it is affected.\n\nWhat it is: CVE-2026-109932 is a medium-severity denial of service vulnerability in Nodejs Undici, published on 15 Oct 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-2026-109932 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- undici (npm): affected from 5.15.0; fixed in 6.29.1\n- undici (npm): affected from 5.15.0; fixed in 6.29.1\n- undici (npm): affected from 7.0.0; fixed in 7.30.1\n- undici (npm): affected from 7.0.0; fixed in 7.30.1\n- undici (npm): affected from 8.0.0; fixed in 8.12.2\n- undici (npm): affected from 8.0.0; fixed in 8.12.2\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-2026-109932/ (Markdown: https://insights.sbomify.com/CVE-2026-109932/index.md)","id":"CVE-2026-109932","markdown":"https://insights.sbomify.com/CVE-2026-109932/index.md","name":"CVE-2026-109932","record":{"aliases":["CLEANSTART-2026-ME95342","DEBIAN-CVE-2026-109932","ECHO-eedf-2067-3e77","GHSA-9fm3-97px-rjf6","UBUNTU-CVE-2026-109932"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js HTTP client","requires_auth":"none","summary":"A malicious WebSocket server can exhaust memory in the undici library by flooding PING frames, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"openjs","cpe":[{"product":"undici","vendor":"nodejs"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-405","name":"Asymmetric Resource Consumption (Amplification)"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"undici is an HTTP client library for Node.js. In versions 5.15.0 through 6.29.0, 7.0.0 through 7.30.0, and 8.0.0 through 8.12.1, its WebSocket client, including the bundled WebSocket exposed by Node.js, can be driven to exhaust process memory by a malicious or compromised WebSocket server. For every PING frame received, the client automatically writes a PONG response and ignores the backpressure signal from the socket write, so a server that streams small PING frames while never reading the client's PONGs makes the outbound write queue and heap grow without bound until the Node.js process runs out of memory and terminates. The attack is remote and unauthenticated, needs only a normal WebSocket connection, and is asymmetric, since small inbound PINGs produce a much larger retained outbound queue, with availability the only impact. The issue is fixed in undici 6.29.1, 7.30.1, and 8.12.2, which pause WebSocket frame parsing when the automatic PONG response hits socket backpressure and resume on drain, bounding the outbound queue, and users should upgrade to one of those versions or later. There is no workaround.","ecosystems":["npm"],"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":"undici WebSocket client vulnerable to Denial of Service via unbounded automatic PONG buffering","id":"CVE-2026-109932","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"nodejs:undici","products":["nodejs:undici"],"type":"denial_of_service","year":"2026"},"n_packages":6,"n_references":2,"next":{"headline":"Otter Blocks \u003c 3.2.8 - Contributor+ Stored XSS via Block Style Attributes","id":"CVE-2026-109933"},"packages":[{"ecosystem":"npm","fixed":["6.29.1"],"introduced":["5.15.0"],"last_affected":[],"package":"undici","purl":null,"source":"GHSA-9fm3-97px-rjf6"},{"ecosystem":"npm","fixed":["6.29.1"],"introduced":["5.15.0"],"last_affected":[],"package":"undici","purl":"pkg:npm/undici","source":"GHSA-9fm3-97px-rjf6"},{"ecosystem":"npm","fixed":["7.30.1"],"introduced":["7.0.0"],"last_affected":[],"package":"undici","purl":null,"source":"GHSA-9fm3-97px-rjf6"},{"ecosystem":"npm","fixed":["7.30.1"],"introduced":["7.0.0"],"last_affected":[],"package":"undici","purl":"pkg:npm/undici","source":"GHSA-9fm3-97px-rjf6"},{"ecosystem":"npm","fixed":["8.12.2"],"introduced":["8.0.0"],"last_affected":[],"package":"undici","purl":null,"source":"GHSA-9fm3-97px-rjf6"},{"ecosystem":"npm","fixed":["8.12.2"],"introduced":["8.0.0"],"last_affected":[],"package":"undici","purl":"pkg:npm/undici","source":"GHSA-9fm3-97px-rjf6"}],"prev":{"headline":"Infility Global \u003c 2.16.25 - Unauthenticated Google Translate API Key Update","id":"CVE-2026-109931"},"products":["undici"],"published":"2026-10-15","related":[{"cvss_score":7.5,"headline":"undici WebSocket client vulnerable to Denial of Service via failed HTTP/2 handshake","id":"CVE-2026-109855","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":7.5,"headline":"undici vulnerable to Denial of Service via unhandled error on excessive content-encodings","id":"CVE-2026-109869","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":7.5,"headline":"undici vulnerable to Denial of Service via TLS 1.2 certificate-changing renegotiation","id":"CVE-2026-87018","kev_date_added":null,"published":"2026-10-15"},{"cvss_score":7.5,"headline":"undici vulnerable to Denial of Service via unrequested WebSocket subprotocol","id":"CVE-2026-19534","kev_date_added":null,"published":"2026-09-04"},{"cvss_score":7.5,"headline":"undici WebSocket client vulnerable to denial of service via fragment count bypass","id":"CVE-2026-12151","kev_date_added":null,"published":"2026-06-17"},{"cvss_score":7.5,"headline":"undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse","id":"CVE-2026-6734","kev_date_added":null,"published":"2026-06-17"},{"cvss_score":7.5,"headline":"undici WebSocket client vulnerable to denial of service via cumulative fragment bypass","id":"CVE-2026-9675","kev_date_added":null,"published":"2026-06-17"}],"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":"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":"2026-10-16","vendors":["undici"]},"summary":"A malicious WebSocket server can exhaust memory in the undici library by flooding PING frames, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-109932/"}