{"id":"EUVD-2026-11705","revision":null,"records":[{"revision":"7b54e87aeebc49d5a34f74e84fbcebc9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-2581","aliases":[],"title":"undici is vulnerable to Unbounded Memory Consumption in in Undici's DeduplicationHandler via Response Buffering leads to DoS","description":"This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).\n\nIn vulnerable Undici versions, when\u00A0interceptors.deduplicate()\u00A0is enabled, response data for deduplicated requests could be accumulated in memory for downstream handlers. An attacker-controlled or untrusted upstream endpoint can exploit this with large/chunked responses and concurrent identical requests, causing high memory usage and potential OOM process termination.\n\nImpacted users are applications that use Undici’s deduplication interceptor against endpoints that may produce large or long-lived response bodies.\n\nPatchesThe issue has been patched by changing deduplication behavior to stream response chunks to downstream handlers as they arrive (instead of full-body accumulation), and by preventing late deduplication when body streaming has already started.\n\nUsers should upgrade to the first official Undici (and Node.js, where applicable) releases that include this patch.","state":0,"publishedAt":"2026-03-12T20:13:19.571+00:00","modifiedAt":"2026-03-13T18:04:58.799+00:00","affected":[{"ecosystem":"https://github.com/nodejs/undici/","name":"undici","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"undici\",\n                    \"product\": \"undici\",\n                    \"collectionURL\": \"https://github.com/nodejs/undici/\",\n                    \"packageName\": \"undici\",\n                    \"repo\": \"https://github.com/nodejs/undici/\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"< 6.24.0; 7.0.0 < 7.24.0\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"6.24.0: 7.24.0\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-phc3-fgpg-7m6h","https://hackerone.com/reports/3513473","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-2581","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-2581","identifiers":["CVE-2026-2581"]},"retained":false,"historicalAffected":[]},{"revision":"abfc21cce5c0411ea925933f85b78137","observedAt":"2026-11-15T12:10:42.837+00:00","statement":{"source":"euvd","id":"EUVD-2026-11705","aliases":["CVE-2026-2581","GHSA-phc3-fgpg-7m6h"],"title":"This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).","description":"This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).\n\nIn vulnerable Undici versions, when\u00A0interceptors.deduplicate()\u00A0is enabled, response data for deduplicated requests could be accumulated in memory for downstream handlers. An attacker-controlled or untrusted upstream endpoint can exploit this with large/chunked responses and concurrent identical requests, causing high memory usage and potential OOM process termination.\n\nImpacted users are applications that use Undici’s deduplication interceptor against endpoints that may produce large or long-lived response bodies.\n\nPatchesThe issue has been patched by changing deduplication behavior to stream response chunks to downstream handlers as they arrive (instead of full-body accumulation), and by preventing late deduplication when body streaming has already started.\n\nUsers should upgrade to the first official Undici (and Node.js, where applicable) releases that include this patch.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":null}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-phc3-fgpg-7m6h","https://hackerone.com/reports/3513473","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-11705","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Mar 12, 2026, 8:13:19 PM","dateUpdated":"Mar 13, 2026, 6:04:58 PM"},"relatedAdvisories":[{"id":"RHSA-2026:7675","title":"Red Hat Security Advisory: nodejs24 security update","vulnerabilityIds":["CVE-2026-1525","CVE-2026-1526","CVE-2026-1527","CVE-2026-1528","CVE-2026-2229","CVE-2026-2581","CVE-2026-21637","CVE-2026-21710","CVE-2026-21711","CVE-2026-21712","CVE-2026-21713","CVE-2026-21714","CVE-2026-21715","CVE-2026-21716","CVE-2026-21717","CVE-2026-25547","CVE-2026-26996","CVE-2026-27135"]},{"id":"WID-SEC-W-2026-0933","title":"IBM App Connect Enterprise (Hono und Undici): Mehrere Schwachstellen","vulnerabilityIds":["CVE-2026-1525","CVE-2026-1526","CVE-2026-1528","CVE-2026-2229","CVE-2026-2581","CVE-2026-29045","CVE-2026-29085","CVE-2026-29086","CVE-2026-1527"]},{"id":"openSUSE-SU-2026:11121-1","title":"corepack24-24.17.0-1.1 on GA media","vulnerabilityIds":["CVE-2026-11525","CVE-2026-12151","CVE-2026-2581","CVE-2026-27135","CVE-2026-40170","CVE-2026-42338","CVE-2026-48615","CVE-2026-48617","CVE-2026-48618","CVE-2026-48619","CVE-2026-48928","CVE-2026-48930","CVE-2026-48931","CVE-2026-48933","CVE-2026-48934","CVE-2026-48935","CVE-2026-48937","CVE-2026-6733","CVE-2026-9496","CVE-2026-9678","CVE-2026-9679"]},{"id":"RHSA-2026:7670","title":"Red Hat Security Advisory: nodejs:24 security update","vulnerabilityIds":["CVE-2026-1525","CVE-2026-1526","CVE-2026-1527","CVE-2026-1528","CVE-2026-2229","CVE-2026-2581","CVE-2026-21637","CVE-2026-21710","CVE-2026-21711","CVE-2026-21712","CVE-2026-21713","CVE-2026-21714","CVE-2026-21715","CVE-2026-21716","CVE-2026-21717","CVE-2026-26996","CVE-2026-27135"]},{"id":"RHSA-2026:7350","title":"Red Hat Security Advisory: nodejs:24 security update","vulnerabilityIds":["CVE-2026-1525","CVE-2026-1526","CVE-2026-1527","CVE-2026-1528","CVE-2026-2229","CVE-2026-2581","CVE-2026-21637","CVE-2026-21710","CVE-2026-21711","CVE-2026-21712","CVE-2026-21713","CVE-2026-21714","CVE-2026-21715","CVE-2026-21716","CVE-2026-21717","CVE-2026-25547","CVE-2026-26996","CVE-2026-27135"]},{"id":"SUSE-SU-2026:22565-1","title":"Security update for nodejs24","vulnerabilityIds":["CVE-2026-11525","CVE-2026-12151","CVE-2026-2581","CVE-2026-27135","CVE-2026-40170","CVE-2026-42338","CVE-2026-48615","CVE-2026-48617","CVE-2026-48618","CVE-2026-48619","CVE-2026-48928","CVE-2026-48930","CVE-2026-48931","CVE-2026-48933","CVE-2026-48934","CVE-2026-48935","CVE-2026-48937","CVE-2026-6733","CVE-2026-9496","CVE-2026-9678","CVE-2026-9679"]},{"id":"openSUSE-SU-2026:21236-1","title":"Security update for nodejs24","vulnerabilityIds":["CVE-2026-11525","CVE-2026-12151","CVE-2026-2581","CVE-2026-27135","CVE-2026-40170","CVE-2026-42338","CVE-2026-48615","CVE-2026-48617","CVE-2026-48618","CVE-2026-48619","CVE-2026-48928","CVE-2026-48930","CVE-2026-48931","CVE-2026-48933","CVE-2026-48934","CVE-2026-48935","CVE-2026-48937","CVE-2026-6733","CVE-2026-9496","CVE-2026-9678","CVE-2026-9679"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-11705","identifiers":["EUVD-2026-11705","CVE-2026-2581","GHSA-phc3-fgpg-7m6h"]},"retained":false,"historicalAffected":[]},{"revision":"b5377bcc1138431a9175425f97852c54","observedAt":"2026-10-25T06:17:16.233+00:00","statement":{"source":"nvd","id":"CVE-2026-2581","aliases":[],"title":"This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).","description":"This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).\n\nIn vulnerable Undici versions, when\u00A0interceptors.deduplicate()\u00A0is enabled, response data for deduplicated requests could be accumulated in memory for downstream handlers. An attacker-controlled or untrusted upstream endpoint can exploit this with large/chunked responses and concurrent identical requests, causing high memory usage and potential OOM process termination.\n\nImpacted users are applications that use Undici’s deduplication interceptor against endpoints that may produce large or long-lived response bodies.\n\nPatchesThe issue has been patched by changing deduplication behavior to stream response chunks to downstream handlers as they arrive (instead of full-body accumulation), and by preventing late deduplication when body streaming has already started.\n\nUsers should upgrade to the first official Undici (and Node.js, where applicable) releases that include this patch.","state":0,"publishedAt":"2026-03-12T21:16:25.93+00:00","modifiedAt":"2026-06-17T10:31:21.14+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici/security/advisories/GHSA-phc3-fgpg-7m6h","https://hackerone.com/reports/3513473"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-2581","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-770"],"productCriteria":["cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-03-12T21:16:25.930","lastModified":"2026-06-17T10:31:21.140"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-2581","identifiers":["CVE-2026-2581"]},"retained":false,"historicalAffected":[]},{"revision":"74695d2537684f078b909d948e49f52b","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-phc3-fgpg-7m6h","aliases":["CVE-2026-2581"],"title":"Undici has Unbounded Memory Consumption in its DeduplicationHandler via Response Buffering that leads to DoS","description":"## Impact\nThis is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS).\n\nIn vulnerable Undici versions, when `interceptors.deduplicate()` is enabled, response data for deduplicated requests could be accumulated in memory for downstream handlers. An attacker-controlled or untrusted upstream endpoint can exploit this with large/chunked responses and concurrent identical requests, causing high memory usage and potential OOM process termination.\n\nImpacted users are applications that use Undici’s deduplication interceptor against endpoints that may produce large or long-lived response bodies.\n\n## Patches\n\nThe issue has been patched by changing deduplication behavior to stream response chunks to downstream handlers as they arrive (instead of full-body accumulation), and by preventing late deduplication when body streaming has already started.\n\nUsers should upgrade to the first official Undici (and Node.js, where applicable) releases that include this patch.\n\n## Workarounds\nIf upgrading immediately is not possible:\n\n- Disable `interceptors.deduplicate()` for affected clients/routes.\n- Use `skipHeaderNames` with a marker header to force high-risk requests to bypass deduplication.\n- Avoid concurrent identical requests to untrusted endpoints that may return very large/chunked bodies.\n- Apply upstream/proxy response-size and timeout limits.","state":0,"publishedAt":"2026-03-13T20:37:58+00:00","modifiedAt":"2026-09-10T03:50:40.2091022+00:00","affected":[{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"7.17.0"},{"kind":"fixed","version":"7.24.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/nodejs/undici/security/advisories/GHSA-phc3-fgpg-7m6h","https://nvd.nist.gov/vuln/detail/CVE-2026-2581","https://hackerone.com/reports/3513473","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici"],"sourceUrl":"https://github.com/advisories/GHSA-phc3-fgpg-7m6h","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-phc3-fgpg-7m6h","identifiers":["GHSA-phc3-fgpg-7m6h","CVE-2026-2581"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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