CVE-2026-16728

{"id": "CVE-2026-16728", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16728", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-30T14:20:06.238159Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "affected": [{"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "affectedData": [{"vendor": "undici", "product": "undici", "versions": [{"status": "affected", "version": "0", "lessThan": "6.28.0", "versionType": "semver"}, {"status": "unaffected", "version": "6.28.0", "versionType": "semver"}, {"status": "affected", "version": "7.0.0", "lessThan": "7.29.0", "versionType": "semver"}, {"status": "unaffected", "version": "7.29.0", "versionType": "semver"}, {"status": "affected", "version": "8.0.0", "lessThan": "8.9.0", "versionType": "semver"}, {"status": "unaffected", "version": "8.9.0", "versionType": "semver"}], "packageURL": "pkg:npm/undici", "defaultStatus": "unaffected"}]}], "published": "2026-07-29T21:17:46.833", "references": [{"url": "https://cna.openjsf.org/security-advisories.html", "tags": ["Vendor Advisory"], "source": "ce714d77-add3-4f53-aff5-83d477b104bb"}, {"url": "https://github.com/nodejs/undici/security/advisories/GHSA-8xcm-r25x-g524", "tags": ["Mitigation", "Vendor Advisory"], "source": "ce714d77-add3-4f53-aff5-83d477b104bb"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "description": [{"lang": "en", "value": "CWE-444"}]}], "descriptions": [{"lang": "en", "value": "undici's retry interceptor can deliver a response whose body length does not match the Content-Length header exposed to the application after a retry or resume of a partial response. In undici before 6.28.0, from 7.0.0 up to before 7.29.0, and from 8.0.0 up to before 8.9.0, a malicious or faulty upstream can return a partial response with a mismatched framing header, close the socket early, and have the retry interceptor assemble a body of a different length while the original Content-Length stays attached. Applications that use the retry interceptor and forward upstream headers and bodies downstream, such as proxies or gateways, may then emit an invalid HTTP response with a stale Content-Length, leading to downstream response desynchronization, connection hangs, or response corruption. Exploitation requires the retry interceptor enabled, an upstream returning a mismatched partial response, and a downstream forwarder that does not remove or recalculate Content-Length. The issue is fixed in undici 6.28.0, 7.29.0, and 8.9.0."}], "lastModified": "2026-08-04T14:06:21.650", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "7C381182-89BF-42BE-B894-F3471E5FFEF5", "versionEndExcluding": "6.28.0"}, {"criteria": "cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "A65A272C-EA4F-4F11-8CC6-465F9103A0A2", "versionEndExcluding": "7.29.0", "versionStartIncluding": "7.0.0"}, {"criteria": "cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "67B6A438-498D-481B-9C41-49DC00E3B439", "versionEndExcluding": "8.9.0", "versionStartIncluding": "8.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb"}