CVE-2026-113724

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{"affected": [{"affectedData": [{"product": "virtualenv", "vendor": "pypa", "versions": [{"status": "affected", "version": "< 21.14.9"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the safe_delete() deletion error handler responds to a failed removal by reading mode bits with os.lstat(path) and applying owner-write permission with os.chmod(path, ...), which follows a symlink. A planted link inside a read-only directory can therefore cause a victim-owned target outside the destination that is initially not writable by the invoking user to become broadly writable before the retry fails, provided that user owns the target and can change its mode. Another account can use the widened mode only if it can traverse the target's parent directories; root does not reach the demonstrated failure path, and the operation does not itself read the target. This issue is fixed in version 21.14.9."}], "id": "CVE-2026-113724", "lastModified": "2026-10-27T12:17:05.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 4.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-113724", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-27T11:02:29.437333Z", "version": "2.0.3"}}]}, "published": "2026-10-20T20:17:19.113", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/commit/2bfdc0230d1b2685fedfcfe66c835b9a2ec7c440"}, {"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/pull/3427"}, {"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/releases/tag/21.14.9"}, {"source": "security-advisories@github.com", "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-43mp-35q3-x3fq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/pypa/virtualenv/security/advisories/GHSA-43mp-35q3-x3fq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "virtualenv: virtualenv: Insecure file permission modification via symlink following", "id": "2556419", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556419"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-59", "details": ["A flaw was found in virtualenv. When cleaning up files, the deletion error-handling routine follows symbolic links when attempting to restore write permissions for removal. A local attacker can exploit this issue by planting a symbolic link pointing to a file owned by the executing user, causing the cleanup operation to unintentionally grant write access to the targeted file. This could allow unauthorized modification of sensitive files."], "mitigation": {"lang": "en:us", "value": "--- CME Mitigation Guidance (2026-10-20) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\nThe highest-value action is to prevent safe_delete error recovery from modifying discretionary access permissions or following symbolic links on cleanup failure: upgrade to virtualenv 21.14.9+ (or the fixed Uv/Rhoai/Odh Kserve Agent Rhel/Rhoai/Odh Kserve Controller Rhel/Rhoai/Odh Kserve Router Rhel/Rhoai/Odh Kserve Storage Initializer Rhel/Python Virtualenv/Rhoai/Odh Feature Server Rhel/Python3.11 Virtualenv/Python3.12 Virtualenv/Devspaces/Udi Rhel/Rhoai/Odh Ta Lmes Job Rhel/Cloudservices/Advisor Backend/Satellite/Iop Host Inventory Rhel/Satellite/Iop Yuptoo Rhel/Ansible Automation Platform 26/Lightspeed Chatbot Rhel/Satellite/Iop Advisor Backend Rhel/Ansible Automation Platform 26/Controller Rhel/Ansible Automation Platform 27/Controller Rhel/Ansible Ai Connect Service/Insights Host Inventory/Rhoai/Odh Training Rocm64 Torch28 Py312 Rhel/Cloudservices/Ros Backend/Redhat User Workloads/Mintmaker Renovate Image/Koku Daily/Nise Populator/Openshift Lightspeed/Lightspeed Service Api Rhel/Rhoai/Odh Trustyai Nemo Guardrails Server Rhel/Ansible Chatbot Stack/Rhoai/Odh Workbench Codeserver Datascience Cpu Py312 Rhel/Rhoai/Odh Workbench Jupyter Datascience Cpu Py312 Rhel/Rhoai/Odh Workbench Jupyter Pytorch Llmcompressor Cuda Py312 Rhel/Cloudservices/Rbac/Cloudservices/Yuptoo/Rhel Cla/Rlsapi Rhel/Rhai Early Access/Docling Serve Cuda Rhel/Digital Roadmap Backend/Ansible Automation Platform 27/Eda Controller Rhel/Automation Hub Container/Ansible Automation Platform 26/Eda Controller Rhel/Vulnerability Engine builds), which propagate deletion exceptions immediately on POSIX without altering permissions, and clear read-only attributes on Windows using file handles that reject reparse points, closing crafted symbolic link inside a read-only directory. Until patched, this is a concern on Multi-user environments where users execute virtualenv cleanup operations on directory trees containing untrusted files, so Avoid executing virtualenv or virtualenv --clear on directory structures populated by other accounts, and restrict write access to directories targeted for virtual environment creation. As a compensating measure, Enable kernel protected symlink sysctls to prevent dereferencing attacker-owned symlinks in shared sticky directories during chmod operations and Configure SELinux user confinement to restrict file access and permission modifications to authorized security contexts. These controls limit blast radius and contain exploitation, but they do not fix the underlying symlink-following permission modification defect \u2014 apply the upstream patch to fully remediate.\nHighest-impact CME: CME-302 SELinux Confined User Mapping (medium)"}, "name": "CVE-2026-113724", "package_state": [{"cpe": "cpe:/a:redhat:openshift_lightspeed:1", "fix_state": "Fix deferred", "package_name": "openshift-lightspeed/lightspeed-service-api-rhel9", "product_name": "OpenShift Lightspeed"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-26/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-26/eda-controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-26/lightspeed-chatbot-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-27/controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-27/eda-controller-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "python3.11-virtualenv", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "python3.12-virtualenv", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "python-virtualenv", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhai-early-access/docling-serve-cuda-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-feature-server-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-agent-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-controller-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-router-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-kserve-storage-initializer-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-ta-lmes-job-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-training-rocm64-torch28-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-trustyai-nemo-guardrails-server-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Fix deferred", "package_name": "rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "python-virtualenv", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3", "fix_state": "Fix deferred", "package_name": "devspaces/udi-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-advisor-backend-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-host-inventory-rhel9", "product_name": "Red Hat Satellite 6"}, {"cpe": "cpe:/a:redhat:satellite:6", "fix_state": "Fix deferred", "package_name": "satellite/iop-yuptoo-rhel9", "product_name": "Red Hat Satellite 6"}], "public_date": "2026-10-20T19:53:29Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-113724\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-113724\nhttps://github.com/pypa/virtualenv/commit/2bfdc0230d1b2685fedfcfe66c835b9a2ec7c440\nhttps://github.com/pypa/virtualenv/pull/3427\nhttps://github.com/pypa/virtualenv/releases/tag/21.14.9\nhttps://github.com/pypa/virtualenv/security/advisories/GHSA-43mp-35q3-x3fq"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,21.14.9)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "virtualenv", "source": "cna", "vendor": "pypa"}, "product": "virtualenv", "vendor": "pypa"}], "created": "2026-10-20T22:30:18.062514+00:00", "updated": "2026-10-22T13:30:05.475556+00:00", "vendors": ["pypa", "pypa$PRODUCT$virtualenv"]}