CVE-2026-14643

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-14643", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "state": "PUBLISHED", "assignerShortName": "openjs", "dateReserved": "2026-07-03T17:49:29.469Z", "datePublished": "2026-07-29T21:08:33.311Z", "dateUpdated": "2026-07-30T15:18:09.760Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-07-29T21:08:33.311Z"}, "descriptions": [{"lang": "en", "value": "undici's cache interceptor mishandles optional whitespace placed around the equals sign of a qualified no-cache or private Cache-Control directive. In undici from 7.0.0 up to before 7.29.0 and from 8.0.0 up to before 8.9.0, the parser either drops the directive or stores a field name with literal quote characters, so the cache decision fails to recognize the qualification and the response is stored. In shared-cache mode, this lets a response containing one user's authenticated data be served from cache to a later caller, including an unauthenticated one, when both requests resolve to the same cache key. It affects applications that enable the cache interceptor in shared mode, forward Authorization headers upstream, and receive cacheable responses with qualified directives padded with whitespace around the equals sign. This is the whitespace-around-equals variant that the fix for CVE-2026-9678 did not normalize, and it is fixed in undici 7.29.0 and 8.9.0.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "undici's cache interceptor mishandles optional whitespace placed around the equals sign of a qualified no-cache or private Cache-Control directive. In undici from 7.0.0 up to before 7.29.0 and from 8.0.0 up to before 8.9.0, the parser either drops the directive or stores a field name with literal quote characters, so the cache decision fails to recognize the qualification and the response is stored. In shared-cache mode, this lets a response containing one user's authenticated data be served from cache to a later caller, including an unauthenticated one, when both requests resolve to the same cache key. It affects applications that enable the cache interceptor in shared mode, forward Authorization headers upstream, and receive cacheable responses with qualified directives padded with whitespace around the equals sign. This is the whitespace-around-equals variant that the fix for CVE-2026-9678 did not normalize, and it is fixed in undici 7.29.0 and 8.9.0."}]}], "affected": [{"vendor": "undici", "product": "undici", "defaultStatus": "unaffected", "versions": [{"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"}], "packageURL": "pkg:npm/undici"}], "references": [{"url": "https://github.com/nodejs/undici/security/advisories/GHSA-jr45-8vmc-qm54"}, {"url": "https://cna.openjsf.org/security-advisories.html"}], "credits": [{"lang": "en", "type": "reporter", "value": "rampage0010"}, {"lang": "en", "type": "remediation developer", "value": "mcollina"}, {"lang": "en", "type": "remediation reviewer", "value": "UlisesGascon"}], "title": "undici vulnerable to cross-user information disclosure via whitespace around equals in Cache-Control directives", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.9, "baseSeverity": "MEDIUM"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-436", "lang": "en", "description": "CWE-436: Interpretation Conflict", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-524", "lang": "en", "description": "CWE-524: Use of Cache Containing Sensitive Information", "type": "CWE"}]}], "x_generator": {"engine": "cve-kit 1.0.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-30T14:20:21.465747Z", "id": "CVE-2026-14643", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-30T15:18:09.760Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"cna": {"title": "undici vulnerable to cross-user information disclosure via whitespace around equals in Cache-Control directives", "credits": [{"lang": "en", "type": "reporter", "value": "rampage0010"}, {"lang": "en", "type": "remediation developer", "value": "mcollina"}, {"lang": "en", "type": "remediation reviewer", "value": "UlisesGascon"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 5.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "undici", "product": "undici", "versions": [{"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"}], "references": [{"url": "https://github.com/nodejs/undici/security/advisories/GHSA-jr45-8vmc-qm54"}, {"url": "https://cna.openjsf.org/security-advisories.html"}], "x_generator": {"engine": "cve-kit 1.0.0"}, "descriptions": [{"lang": "en", "value": "undici's cache interceptor mishandles optional whitespace placed around the equals sign of a qualified no-cache or private Cache-Control directive. In undici from 7.0.0 up to before 7.29.0 and from 8.0.0 up to before 8.9.0, the parser either drops the directive or stores a field name with literal quote characters, so the cache decision fails to recognize the qualification and the response is stored. In shared-cache mode, this lets a response containing one user's authenticated data be served from cache to a later caller, including an unauthenticated one, when both requests resolve to the same cache key. It affects applications that enable the cache interceptor in shared mode, forward Authorization headers upstream, and receive cacheable responses with qualified directives padded with whitespace around the equals sign. This is the whitespace-around-equals variant that the fix for CVE-2026-9678 did not normalize, and it is fixed in undici 7.29.0 and 8.9.0.", "supportingMedia": [{"type": "text/html", "value": "undici's cache interceptor mishandles optional whitespace placed around the equals sign of a qualified no-cache or private Cache-Control directive. In undici from 7.0.0 up to before 7.29.0 and from 8.0.0 up to before 8.9.0, the parser either drops the directive or stores a field name with literal quote characters, so the cache decision fails to recognize the qualification and the response is stored. In shared-cache mode, this lets a response containing one user's authenticated data be served from cache to a later caller, including an unauthenticated one, when both requests resolve to the same cache key. It affects applications that enable the cache interceptor in shared mode, forward Authorization headers upstream, and receive cacheable responses with qualified directives padded with whitespace around the equals sign. This is the whitespace-around-equals variant that the fix for CVE-2026-9678 did not normalize, and it is fixed in undici 7.29.0 and 8.9.0.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-436", "description": "CWE-436: Interpretation Conflict"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-524", "description": "CWE-524: Use of Cache Containing Sensitive Information"}]}], "providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-07-29T21:08:33.311Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-14643", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-30T14:20:21.465747Z"}}}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2026-07-30T14:20:26.717Z"}}]}, "cveMetadata": {"cveId": "CVE-2026-14643", "state": "PUBLISHED", "dateUpdated": "2026-07-29T21:08:33.311Z", "dateReserved": "2026-07-03T17:49:29.469Z", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "datePublished": "2026-07-29T21:08:33.311Z", "assignerShortName": "openjs"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/undici", "product": "undici", "vendor": "undici", "versions": [{"lessThan": "7.29.0", "status": "affected", "version": "7.0.0", "versionType": "semver"}, {"status": "unaffected", "version": "7.29.0", "versionType": "semver"}, {"lessThan": "8.9.0", "status": "affected", "version": "8.0.0", "versionType": "semver"}, {"status": "unaffected", "version": "8.9.0", "versionType": "semver"}]}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "A65A272C-EA4F-4F11-8CC6-465F9103A0A2", "versionEndExcluding": "7.29.0", "versionStartIncluding": "7.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "67B6A438-498D-481B-9C41-49DC00E3B439", "versionEndExcluding": "8.9.0", "versionStartIncluding": "8.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "undici's cache interceptor mishandles optional whitespace placed around the equals sign of a qualified no-cache or private Cache-Control directive. In undici from 7.0.0 up to before 7.29.0 and from 8.0.0 up to before 8.9.0, the parser either drops the directive or stores a field name with literal quote characters, so the cache decision fails to recognize the qualification and the response is stored. In shared-cache mode, this lets a response containing one user's authenticated data be served from cache to a later caller, including an unauthenticated one, when both requests resolve to the same cache key. It affects applications that enable the cache interceptor in shared mode, forward Authorization headers upstream, and receive cacheable responses with qualified directives padded with whitespace around the equals sign. This is the whitespace-around-equals variant that the fix for CVE-2026-9678 did not normalize, and it is fixed in undici 7.29.0 and 8.9.0."}], "id": "CVE-2026-14643", "lastModified": "2026-08-04T15:53:30.723", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-14643", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-30T14:20:21.465747Z", "version": "2.0.3"}}]}, "published": "2026-07-29T22:16:52.337", "references": [{"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "tags": ["Third Party Advisory"], "url": "https://cna.openjsf.org/security-advisories.html"}, {"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://github.com/nodejs/undici/security/advisories/GHSA-jr45-8vmc-qm54"}], "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-436"}, {"lang": "en", "value": "CWE-524"}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2026:48273", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "nodejs26-main-26.5.1-1.5.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-07-29T00:00:00Z"}, {"advisory": "RHSA-2026:48537", "cpe": "cpe:/a:redhat:hummingbird:1", "package": "nodejs24-main-24.18.1-0.1.hum1", "product_name": "Red Hat Hardened Images", "release_date": "2026-07-30T00:00:00Z"}], "bugzilla": {"description": "undici: undici: Cross-user information disclosure due to improper Cache-Control directive parsing", "id": "2508676", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2508676"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-524", "details": ["A flaw was found in undici. The cache interceptor in undici improperly handles optional whitespace around the equals sign in `no-cache` or `private` `Cache-Control` directives. This vulnerability allows an attacker to bypass cache restrictions, leading to cross-user information disclosure. Specifically, authenticated user data can be inadvertently served from the cache to a different, potentially unauthenticated, user if both requests resolve to the same cache key."], "name": "CVE-2026-14643", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana12.4", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "jaeger", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Will not fix", "package_name": "nodejs25", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "prometheus3.13", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-29T21:08:33Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-14643\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-14643\nhttps://cna.openjsf.org/security-advisories.html\nhttps://github.com/nodejs/undici/security/advisories/GHSA-jr45-8vmc-qm54"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.0,7.29.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "7.29.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.9.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "8.9.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "undici", "source": "cna", "vendor": "undici"}, "product": "undici", "vendor": "undici"}], "created": "2026-07-29T22:30:04.646187+00:00", "updated": "2026-08-03T13:00:07.209633+00:00", "vendors": ["undici", "undici$PRODUCT$undici"]}