{"id":"GHSA-pmjh-fq2x-6v4x","revision":null,"records":[{"revision":"8dec2130c1db4e4d983b2b4a090545e4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-18149","aliases":[],"title":"undici vulnerable to Denial of Service via orphaned RetryHandler response body","description":"undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries the request. If the retry returns a non-retryable status such as 400, the handler forwards that new response downstream and replaces its internal response stream, but the original response body that the application still holds is never ended or destroyed. As a result calls that read that body never settle, and the configured body timeout does not fire because its timer is tied to the connection parser rather than the orphaned body. An attacker-controlled server can trigger this with two short responses without keeping a connection open, and repeated requests accumulate pending promises and streams that can exhaust application concurrency or memory. This affects undici versions from 7.11.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.","state":0,"publishedAt":"2026-09-04T17:21:46.263+00:00","modifiedAt":"2026-09-04T17:49:50.163+00:00","affected":[{"ecosystem":"Vendor product","name":"undici","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"undici\",\n                    \"product\": \"undici\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"7.11.0\",\n                            \"lessThan\": \"7.29.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"7.29.1\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"affected\",\n                            \"version\": \"8.0.0\",\n                            \"lessThan\": \"8.10.2\"\n                        },\n                        {\n                            \"versionType\": \"semver\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"8.10.2\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/undici\"\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-pmjh-fq2x-6v4x","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-18149","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-18149","identifiers":["CVE-2026-18149"]},"retained":false,"historicalAffected":[]},{"revision":"c03936922269487bb38d60f10428e6d4","observedAt":"2026-11-11T06:27:52.611+00:00","statement":{"source":"euvd","id":"EUVD-2026-71617","aliases":["CVE-2026-18149","GHSA-pmjh-fq2x-6v4x"],"title":"undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries…","description":"undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries the request. If the retry returns a non-retryable status such as 400, the handler forwards that new response downstream and replaces its internal response stream, but the original response body that the application still holds is never ended or destroyed. As a result calls that read that body never settle, and the configured body timeout does not fire because its timer is tied to the connection parser rather than the orphaned body. An attacker-controlled server can trigger this with two short responses without keeping a connection open, and repeated requests accumulate pending promises and streams that can exhaust application concurrency or memory. This affects undici versions from 7.11.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.","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-pmjh-fq2x-6v4x","https://cna.openjsf.org/security-advisories.html"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-71617","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 4, 2026, 5:21:46 PM","dateUpdated":"Sep 4, 2026, 5:49:50 PM"},"relatedAdvisories":[{"id":"RHSA-2026:66008","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-14199","CVE-2026-18149","CVE-2026-18540","CVE-2026-19197","CVE-2026-19534","CVE-2026-28378","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014"]},{"id":"RHSA-2026:54438","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-18149","CVE-2026-48932","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014","CVE-2026-85152"]},{"id":"RHSA-2026:54389","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update","vulnerabilityIds":["CVE-2026-14257","CVE-2026-18149","CVE-2026-48932","CVE-2026-69152","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-85008","CVE-2026-85014","CVE-2026-85152"]},{"id":"msrc_CVE-2026-18149","title":"undici vulnerable to Denial of Service via orphaned RetryHandler response body","vulnerabilityIds":["CVE-2026-18149"]},{"id":"WID-SEC-W-2026-3596","title":"IBM App Connect Enterprise: Mehrere Schwachstellen","vulnerabilityIds":["CVE-2022-35948","CVE-2026-13149","CVE-2026-14257","CVE-2026-15157","CVE-2026-1527","CVE-2026-16728","CVE-2026-16729","CVE-2026-18149","CVE-2026-18540","CVE-2026-19534","CVE-2026-2391","CVE-2026-45820","CVE-2026-54272","CVE-2026-63670","CVE-2026-67213","CVE-2026-67214","CVE-2026-69152","CVE-2026-69192","CVE-2026-69198","CVE-2026-73566","CVE-2026-73646","CVE-2026-77037","CVE-2026-77063","CVE-2026-77078","CVE-2026-82333","CVE-2026-82417","CVE-2026-82562","CVE-2026-83605","CVE-2026-83606","CVE-2026-83607","CVE-2026-83608","CVE-2026-83609","CVE-2026-83610","CVE-2026-83611","CVE-2026-83612","CVE-2026-83613","CVE-2026-83614","CVE-2026-83615","CVE-2026-83616","CVE-2026-83618","CVE-2026-83619","CVE-2026-84292","CVE-2026-84371","CVE-2026-84375","CVE-2026-84890","CVE-2026-84933","CVE-2026-84947","CVE-2026-84961","CVE-2026-85008","CVE-2026-85014","CVE-2026-85024","CVE-2026-85152"]}],"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-2026-71617","identifiers":["EUVD-2026-71617","CVE-2026-18149","GHSA-pmjh-fq2x-6v4x"]},"retained":false,"historicalAffected":[]},{"revision":"332312795a1a4efeb9879e1fedcd19df","observedAt":"2026-10-25T05:17:25.909+00:00","statement":{"source":"nvd","id":"CVE-2026-18149","aliases":[],"title":"undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries…","description":"undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries the request. If the retry returns a non-retryable status such as 400, the handler forwards that new response downstream and replaces its internal response stream, but the original response body that the application still holds is never ended or destroyed. As a result calls that read that body never settle, and the configured body timeout does not fire because its timer is tied to the connection parser rather than the orphaned body. An attacker-controlled server can trigger this with two short responses without keeping a connection open, and repeated requests accumulate pending promises and streams that can exhaust application concurrency or memory. This affects undici versions from 7.11.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.","state":0,"publishedAt":"2026-09-04T18:17:49.733+00:00","modifiedAt":"2026-09-16T20:41:26.947+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-pmjh-fq2x-6v4x"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18149","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-772"],"productCriteria":["cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-09-04T18:17:49.733","lastModified":"2026-09-16T20:41:26.947"},"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-2026-18149","identifiers":["CVE-2026-18149"]},"retained":false,"historicalAffected":[]},{"revision":"0aae83d9abc74bcb98ba4660c641a17f","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-pmjh-fq2x-6v4x","aliases":["CVE-2026-18149"],"title":"undici vulnerable to Denial of Service via orphaned RetryHandler response body","description":"### Impact\n\nundici's `RetryHandler` can leave a response body pending indefinitely. When a retried request receives a non-retryable response after a truncated one, the original `response.body` held by the application is never settled, so reads such as `response.body.text()` hang and `bodyTimeout` does not fire. A malicious server can repeat this to accumulate pending promises and streams, leading to denial of service.\n\n### Patches\n\nPatched in undici v7.29.1 and v8.10.2.\n\n### Workarounds\n\nImpose an independent request deadline and destroy the response body when it expires. `bodyTimeout` alone does not prevent this.","state":0,"publishedAt":"2026-09-29T18:22:34+00:00","modifiedAt":"2026-09-29T18:30:41.1642401+00:00","affected":[{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"7.11.0"},{"kind":"fixed","version":"7.29.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"undici","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"8.0.0"},{"kind":"fixed","version":"8.10.2"}]}],"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-pmjh-fq2x-6v4x","https://nvd.nist.gov/vuln/detail/CVE-2026-18149","https://github.com/nodejs/undici/commit/3c6726599cea8646384dde846c97d630da472a74","https://github.com/nodejs/undici/commit/e905b5b87e6953bcc542af90557b2fee5b7b5974","https://hackerone.com/reports/3892751","https://cna.openjsf.org/security-advisories.html","https://github.com/nodejs/undici","https://github.com/nodejs/undici/releases/tag/v7.29.1","https://github.com/nodejs/undici/releases/tag/v8.10.2"],"sourceUrl":"https://github.com/advisories/GHSA-pmjh-fq2x-6v4x","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-pmjh-fq2x-6v4x","identifiers":["GHSA-pmjh-fq2x-6v4x","CVE-2026-18149"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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