{"id":"EUVD-2026-100461","revision":null,"records":[{"revision":"58661180fa1e4b29a3ddb0a7e81827a4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-86063","aliases":[],"title":"Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning","description":"Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character SHA. An attacker who controls a plugin repository on a Git host that permits SHA-shaped branch names can create a branch named after the reviewed commit, causing checkout to select the branch tip and install attacker-controlled plugin code. Exploitation requires a user to install the malicious plugin and pin it to the ostensibly safe hash. This issue is fixed in version 2.1.179.","state":0,"publishedAt":"2026-10-13T19:04:11.695+00:00","modifiedAt":"2026-10-13T20:21:00.156+00:00","affected":[{"ecosystem":"Vendor product","name":"claude-code","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"anthropics\",\n                    \"product\": \"claude-code\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.1.179\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv","https://github.com/anthropics/claude-code/releases/tag/v2.1.179"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-86063","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-86063","identifiers":["CVE-2026-86063"]},"retained":false,"historicalAffected":[]},{"revision":"4b4abbf6278e4e78b76d5f6f318da993","observedAt":"2026-11-07T15:22:58.931+00:00","statement":{"source":"euvd","id":"EUVD-2026-100461","aliases":["CVE-2026-86063","GHSA-pq7j-f95f-qfcv"],"title":"Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character …","description":"Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character SHA. An attacker who controls a plugin repository on a Git host that permits SHA-shaped branch names can create a branch named after the reviewed commit, causing checkout to select the branch tip and install attacker-controlled plugin code. Exploitation requires a user to install the malicious plugin and pin it to the ostensibly safe hash. This issue is fixed in version 2.1.179.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.5,"severity":null}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv","https://github.com/anthropics/claude-code/releases/tag/v2.1.179"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-100461","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 13, 2026, 7:04:11 PM","dateUpdated":"Oct 13, 2026, 8:21:00 PM"},"relatedAdvisories":[{"id":"RHSA-2026:90321","title":"Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.31.0 Release.","vulnerabilityIds":["CVE-2023-54404","CVE-2025-62718","CVE-2026-8643","CVE-2026-9496","CVE-2026-12185","CVE-2026-13697","CVE-2026-14682","CVE-2026-15076","CVE-2026-16308","CVE-2026-17106","CVE-2026-18427","CVE-2026-19203","CVE-2026-19534","CVE-2026-39820","CVE-2026-41178","CVE-2026-41707","CVE-2026-42499","CVE-2026-42502","CVE-2026-45416","CVE-2026-47884","CVE-2026-47886","CVE-2026-47888","CVE-2026-47890","CVE-2026-47892","CVE-2026-50010","CVE-2026-55831","CVE-2026-55833","CVE-2026-55851","CVE-2026-56745","CVE-2026-56746","CVE-2026-56819","CVE-2026-56852","CVE-2026-56854","CVE-2026-58062","CVE-2026-59280","CVE-2026-59282","CVE-2026-59283","CVE-2026-59296","CVE-2026-59313","CVE-2026-59323","CVE-2026-59651","CVE-2026-59887","CVE-2026-59899","CVE-2026-59901","CVE-2026-62243","CVE-2026-64607","CVE-2026-67213","CVE-2026-67312","CVE-2026-67313","CVE-2026-67314","CVE-2026-67320","CVE-2026-67321","CVE-2026-68494","CVE-2026-68497","CVE-2026-69152","CVE-2026-69192","CVE-2026-71290","CVE-2026-71324","CVE-2026-71325","CVE-2026-71327","CVE-2026-73500","CVE-2026-73508","CVE-2026-74835","CVE-2026-75838","CVE-2026-75899","CVE-2026-75931","CVE-2026-76169","CVE-2026-81521","CVE-2026-82417","CVE-2026-82562","CVE-2026-84292","CVE-2026-84375","CVE-2026-84394","CVE-2026-84428","CVE-2026-84445","CVE-2026-84469","CVE-2026-84504","CVE-2026-84961","CVE-2026-85062","CVE-2026-85124","CVE-2026-85152","CVE-2026-85595","CVE-2026-85597","CVE-2026-86063","CVE-2026-87743","CVE-2026-88004","CVE-2026-88007","CVE-2026-88008","CVE-2026-88009","CVE-2026-88011","CVE-2026-88012","CVE-2026-88031","CVE-2026-88878","CVE-2026-88879","CVE-2026-90711","CVE-2026-93749","CVE-2026-100655","CVE-2026-100656","CVE-2026-100666","CVE-2026-101916","CVE-2026-102925","CVE-2026-102930","CVE-2026-103435","CVE-2026-109618","CVE-2026-109619"]}],"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-2026-100461","identifiers":["EUVD-2026-100461","CVE-2026-86063","GHSA-pq7j-f95f-qfcv"]},"retained":false,"historicalAffected":[]},{"revision":"00ec61ebdb254fcc90622e11da9e6c77","observedAt":"2026-10-25T16:19:16.24+00:00","statement":{"source":"nvd","id":"CVE-2026-86063","aliases":[],"title":"Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character …","description":"Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character SHA. An attacker who controls a plugin repository on a Git host that permits SHA-shaped branch names can create a branch named after the reviewed commit, causing checkout to select the branch tip and install attacker-controlled plugin code. Exploitation requires a user to install the malicious plugin and pin it to the ostensibly safe hash. This issue is fixed in version 2.1.179.","state":0,"publishedAt":"2026-10-13T19:21:21.417+00:00","modifiedAt":"2026-10-13T21:19:36.73+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.5,"severity":"HIGH"}],"references":["https://github.com/anthropics/claude-code/releases/tag/v2.1.179","https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86063","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-494","CWE-829"],"productCriteria":[],"sourceDates":{"published":"2026-10-13T19:21:21.417","lastModified":"2026-10-13T21:19:36.730"},"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-2026-86063","identifiers":["CVE-2026-86063"]},"retained":false,"historicalAffected":[]},{"revision":"42c4bbb6f7fa4ab8abe28a92b005c8c5","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-pq7j-f95f-qfcv","aliases":["CVE-2026-86063"],"title":"Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning","description":"The plugin install flow in Claude Code and Claude Desktop checked out a marketplace's pinned commit SHA using `git checkout` without verifying that the resulting HEAD matched the pinned SHA. An attacker controlling a plugin's upstream repository could create a branch named identically to the pinned 40-character SHA, causing the checkout to silently resolve to the attacker's branch tip instead of the reviewed commit, resulting in attacker-controlled code being installed bypassing the pinned hash. Exploitation required a user to install a malicious plugin, pin to a safe hash, and for the plugin source to be hosted on a git host that permitted SHA-shaped branch names.\n\nUsers on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.\n\nThank you to Or Nevo Michrowski of Air Security for reporting this issue.","state":0,"publishedAt":"2026-10-15T20:22:07+00:00","modifiedAt":"2026-10-15T20:30:08.5589079+00:00","affected":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.1.179"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv","https://nvd.nist.gov/vuln/detail/CVE-2026-86063","https://github.com/anthropics/claude-code","https://github.com/anthropics/claude-code/releases/tag/v2.1.179"],"sourceUrl":"https://github.com/advisories/GHSA-pq7j-f95f-qfcv","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-pq7j-f95f-qfcv","identifiers":["GHSA-pq7j-f95f-qfcv","CVE-2026-86063"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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