CVE-2026-50021

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{"affected": [{"affectedData": [{"product": "pnpm", "vendor": "pnpm", "versions": [{"status": "affected", "version": "< 10.34.0"}, {"status": "affected", "version": ">= 11.0.0, < 11.4.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "F41CB711-4C82-4DEA-BC04-6DFB489B0158", "versionEndExcluding": "10.34.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "7D7BF63F-E778-4B19-8290-D8D69305361D", "versionEndExcluding": "11.4.0", "versionStartIncluding": "11.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0."}], "id": "CVE-2026-50021", "lastModified": "2026-11-03T23:17:46.270", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50021", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T03:56:15.445797Z", "version": "2.0.3"}}]}, "published": "2026-06-25T18:16:39.557", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-354"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "pnpm: pnpm: Integrity bypass allows installation of altered packages via modified lockfile", "id": "2493039", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493039"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-494", "details": ["pnpm is a package manager. Prior to 10.34.0 and 11.4.0, pnpm's tarball extraction worker skips integrity verification when the integrity field is absent from the lockfile resolution. If an attacker can both modify pnpm-lock.yaml to remove the integrity: field and cause the referenced registry URL to serve altered package content, pnpm install --frozen-lockfile can install the altered package without an integrity error. npm's npm ci enforces integrity by default; pnpm's behavior of silently skipping verification is a pnpm-specific fail-open gap. This vulnerability is fixed in 10.34.0 and 11.4.0.", "A flaw was found in pnpm, a package manager. An attacker who can modify the `pnpm-lock.yaml` file and control the package registry can exploit this vulnerability. By removing the integrity field from the lockfile and serving altered package content, the `pnpm install --frozen-lockfile` command can install malicious or altered software without integrity verification. This can lead to the execution of arbitrary code or other malicious activities on the system."], "name": "CVE-2026-50021", "package_state": [{"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "pnpm", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Affected", "package_name": "pnpm", "product_name": "Red Hat Build of Keycloak"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Affected", "package_name": "pnpm", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Affected", "package_name": "pnpm", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}], "public_date": "2026-06-25T16:48:27Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-50021\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-50021\nhttps://github.com/pnpm/pnpm/security/advisories/GHSA-q6j5-fjx5-2mc3"], "statement": "This is an Important supply chain vulnerability in pnpm that allows an attacker to bypass package integrity verification. By manipulating the `pnpm-lock.yaml` file to remove integrity checks and controlling the package registry, an attacker can cause `pnpm install --frozen-lockfile` to install malicious or altered packages without detection. This poses a significant risk in environments where both lockfile modification and registry control are possible, leading to potential arbitrary code execution.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,10.34.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.0.0,11.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "pnpm", "source": "cna", "vendor": "pnpm"}, "product": "pnpm", "vendor": "pnpm"}], "created": "2026-06-25T18:30:14.637948+00:00", "updated": "2026-08-04T08:30:05.454632+00:00", "vendors": ["pnpm", "pnpm$PRODUCT$pnpm"]}