{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-87766 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-87766 is a high-severity path traversal vulnerability in Red Hat Enterprise Linux 10, published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-87766 and fix it if it is affected.\n\nWhat it is: CVE-2026-87766 is a high-severity path traversal vulnerability in Red Hat Enterprise Linux 10, published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-87766 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-87766/ (Markdown: https://insights.sbomify.com/CVE-2026-87766/index.md)","id":"CVE-2026-87766","markdown":"https://insights.sbomify.com/CVE-2026-87766/index.md","name":"CVE-2026-87766","record":{"aliases":["ALSA-2026:85306","ALSA-2026:85308","ALSA-2026:85309","AZL-100908","CLSA-2026-1791475845","DEBIAN-CVE-2026-87766","ECHO-3a6d-2aae-ba82","GHSA-pxhw-h44j-8pfx","MGASA-2026-0371","RHSA-2026:85306","RHSA-2026:85308","RHSA-2026:85309","RHSA-2026:85312","RHSA-2026:85313","RHSA-2026:85317","RHSA-2026:85319","RHSA-2026:85322","RHSA-2026:85324","RHSA-2026:85325","RLSA-2026:85306","RLSA-2026:85308","RLSA-2026:85309","UBUNTU-CVE-2026-87766"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["data_modify","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux container sandbox","requires_auth":"low_privilege","summary":"Attackers can write files outside the sandbox during setup via symlink traversal, potentially modifying host files or escalating privileges.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:9::baseos","Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_aus:8.4::baseos","Red Hat:rhel_aus:8.6::baseos","Red Hat:rhel_e4s:8.8::baseos","Red Hat:rhel_e4s:9.2::baseos","Red Hat:rhel_e4s:9.4::baseos","Red Hat:rhel_eus:9.6::baseos","Red Hat:rhel_eus_long_life:8.4::baseos","Red Hat:rhel_eus_long_life:8.6::baseos","Red Hat:rhel_tus:8.8::baseos","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup","id":"CVE-2026-87766","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":45,"n_references":16,"next":{"headline":"WP Shortcut Link \u003c= 1.2.0 - Unauthenticated SQL Injection via url","id":"CVE-2026-87767"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["0.10.0-5.el10_2"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/almalinux/bubblewrap","source":"ALSA-2026:85308"},{"ecosystem":"AlmaLinux:8","fixed":["0.4.0-3.el8_10"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/almalinux/bubblewrap","source":"ALSA-2026:85306"},{"ecosystem":"AlmaLinux:9","fixed":["0.6.3-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/almalinux/bubblewrap","source":"ALSA-2026:85309"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:0.10.0-5.el10_2"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85308"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:0.10.0-5.el10_2"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85308"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:0.10.0-5.el10_2"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85308"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:0.4.0-3.el8_10"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85306"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:0.4.0-3.el8_10"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85306"},{"ecosystem":"Red Hat:enterprise_linux:8::baseos","fixed":["0:0.4.0-3.el8_10"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85306"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:0.6.3-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85309"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:0.6.3-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85309"},{"ecosystem":"Red Hat:enterprise_linux:9::baseos","fixed":["0:0.6.3-1.el9_8.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85309"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:0.10.0-3.el10_0.4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85312"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:0.10.0-3.el10_0.4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85312"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:0.10.0-3.el10_0.4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85312"},{"ecosystem":"Red Hat:rhel_aus:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_aus:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_aus:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_aus:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_aus:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_aus:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_e4s:8.8::baseos","fixed":["0:0.4.0-3.el8_8"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85313"},{"ecosystem":"Red Hat:rhel_e4s:8.8::baseos","fixed":["0:0.4.0-3.el8_8"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85313"},{"ecosystem":"Red Hat:rhel_e4s:8.8::baseos","fixed":["0:0.4.0-3.el8_8"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85313"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:0.4.1-7.el9_2.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85322"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:0.4.1-7.el9_2.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85322"},{"ecosystem":"Red Hat:rhel_e4s:9.2::baseos","fixed":["0:0.4.1-7.el9_2.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85322"},{"ecosystem":"Red Hat:rhel_e4s:9.4::baseos","fixed":["0:0.4.1-7.el9_4.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85319"},{"ecosystem":"Red Hat:rhel_e4s:9.4::baseos","fixed":["0:0.4.1-7.el9_4.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85319"},{"ecosystem":"Red Hat:rhel_e4s:9.4::baseos","fixed":["0:0.4.1-7.el9_4.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85319"},{"ecosystem":"Red Hat:rhel_eus:9.6::baseos","fixed":["0:0.4.1-8.el9_6.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85325"},{"ecosystem":"Red Hat:rhel_eus:9.6::baseos","fixed":["0:0.4.1-8.el9_6.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85325"},{"ecosystem":"Red Hat:rhel_eus:9.6::baseos","fixed":["0:0.4.1-8.el9_6.1"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85325"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.4::baseos","fixed":["0:0.4.0-3.el8_4"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85317"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debuginfo","purl":"pkg:rpm/redhat/bubblewrap-debuginfo","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_eus_long_life:8.6::baseos","fixed":["0:0.4.0-3.el8_6"],"introduced":["0"],"last_affected":[],"package":"bubblewrap-debugsource","purl":"pkg:rpm/redhat/bubblewrap-debugsource","source":"RHSA-2026:85324"},{"ecosystem":"Red Hat:rhel_tus:8.8::baseos","fixed":["0:0.4.0-3.el8_8"],"introduced":["0"],"last_affected":[],"package":"bubblewrap","purl":"pkg:rpm/redhat/bubblewrap","source":"RHSA-2026:85313"}],"prev":{"headline":"Improper Input Validation in Kernel APsys DVFS","id":"CVE-2026-87765"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On","Red Hat Enterprise Linux 8.8 Telecommunications Update Service","Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support","Red Hat Hardened Images"],"published":"2026-09-09","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Red Hat"]},"summary":"Attackers can write files outside the sandbox during setup via symlink traversal, potentially modifying host files or escalating privileges.","url":"https://insights.sbomify.com/CVE-2026-87766/"}