CVE-2026-55487

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55487", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-16T22:28:27.061Z", "datePublished": "2026-06-25T16:41:12.441Z", "dateUpdated": "2026-06-25T18:03:06.773Z"}, "containers": {"cna": {"title": "pnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycle", "problemTypes": [{"descriptions": [{"cweId": "CWE-346", "lang": "en", "description": "CWE-346: Origin Validation Error", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-693", "lang": "en", "description": "CWE-693: Protection Mechanism Failure", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-829", "lang": "en", "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r"}], "affected": [{"vendor": "pnpm", "product": "pnpm", "versions": [{"version": "< 10.34.2", "status": "affected"}, {"version": ">= 11.0.0, < 11.5.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-25T16:41:12.441Z"}, "descriptions": [{"lang": "en", "value": "pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3."}], "source": {"advisory": "GHSA-5wx6-mg75-v57r", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-25T18:02:49.413766Z", "id": "CVE-2026-55487", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T18:03:06.773Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-55487", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-25T18:02:49.413766Z"}}}], "references": [{"url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-25T18:02:33.707Z"}}], "cna": {"title": "pnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycle", "source": {"advisory": "GHSA-5wx6-mg75-v57r", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "pnpm", "product": "pnpm", "versions": [{"status": "affected", "version": "< 10.34.2"}, {"status": "affected", "version": ">= 11.0.0, < 11.5.3"}]}], "references": [{"url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r", "name": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-346", "description": "CWE-346: Origin Validation Error"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-693", "description": "CWE-693: Protection Mechanism Failure"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-829", "description": "CWE-829: Inclusion of Functionality from Untrusted Control Sphere"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-25T16:41:12.441Z"}}}, "cveMetadata": {"cveId": "CVE-2026-55487", "state": "PUBLISHED", "dateUpdated": "2026-06-25T18:03:06.773Z", "dateReserved": "2026-06-16T22:28:27.061Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-25T16:41:12.441Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "pnpm", "vendor": "pnpm", "versions": [{"status": "affected", "version": "< 10.34.2"}, {"status": "affected", "version": ">= 11.0.0, < 11.5.3"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "78477B45-9B80-4320-A5F4-2AF8D030DA04", "versionEndExcluding": "10.34.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:pnpm:pnpm:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "F72C2733-EDFC-4CBF-8B11-7C636ABEBC1A", "versionEndExcluding": "11.5.3", "versionStartIncluding": "11.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3."}], "id": "CVE-2026-55487", "lastModified": "2026-06-29T21:16:26.670", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55487", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-25T18:02:49.413766Z", "version": "2.0.3"}}]}, "published": "2026-06-25T18:16:40.460", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}, {"lang": "en", "value": "CWE-693"}, {"lang": "en", "value": "CWE-829"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "pnpm: pnpm: Supply chain compromise via manipulated package source strings", "id": "2493035", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2493035"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-140", "details": ["pnpm is a package manager. Prior to 10.34.2 and 11.5.3, the generic peer-suffix normalizer also stripped parenthesized text from git, URL, tarball, file, and other opaque locators. Approval for one source string could therefore authorize a different attacker-controlled source whose locator normalized to the same value. This vulnerability is fixed in 10.34.2 and 11.5.3.", "A flaw was found in pnpm, a package manager. This vulnerability allows a remote attacker to bypass security checks by manipulating how package source strings are processed. By crafting a specially designed source string, an attacker could trick the system into approving and using a malicious package instead of the intended one. This could lead to the execution of unauthorized code or the installation of harmful software, severely impacting the confidentiality, integrity, and availability of the system."], "name": "CVE-2026-55487", "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": "2026-06-25T16:41:12Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-55487\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-55487\nhttps://github.com/pnpm/pnpm/security/advisories/GHSA-5wx6-mg75-v57r"], "statement": "This Important vulnerability in pnpm allows an attacker to bypass security checks by manipulating package source strings. This could lead to the execution of unauthorized code or the installation of malicious software. The flaw arises from the package manager's normalization of opaque locators, where an approved source string could inadvertently authorize a different, attacker-controlled source.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,10.34.2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[11.0.0,11.5.3)"}}], "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": "2026-06-25T19:00:08.632514+00:00", "updated": "2026-07-31T17:00:07.156897+00:00", "vendors": ["pnpm", "pnpm$PRODUCT$pnpm"]}