{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52791 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-52791 is a low-severity vulnerability in containers fuse-overlayfs, published on 29 Jul 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-2026-52791 and fix it if it is affected.\n\nWhat it is: CVE-2026-52791 is a low-severity vulnerability in containers fuse-overlayfs, published on 29 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-52791 exists.\n\nAffected product: containers fuse-overlayfs. 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-2026-52791/ (Markdown: https://insights.sbomify.com/CVE-2026-52791/index.md)","id":"CVE-2026-52791","markdown":"https://insights.sbomify.com/CVE-2026-52791/index.md","name":"CVE-2026-52791","record":{"aliases":["AZL-94145","DEBIAN-CVE-2026-52791","GHSA-2cc4-p72c-v85h","RHSA-2026:52805","SUSE-SU-2026:23252-1","SUSE-SU-2026:23469-1","SUSE-SU-2026:23618-1","SUSE-SU-2026:4026-1","UBUNTU-CVE-2026-52791","openSUSE-SU-2026:11461-1","openSUSE-SU-2026:21753-1"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"fuse-overlayfs","requires_auth":"low_privilege","summary":"A low-privileged process can retain SUID/SGID bits on copied-up files in fuse-overlayfs, enabling privilege escalation in rootless containers.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":2,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-266","name":"Incorrect Privilege Assignment"}],"description":"fuse-overlayfs is an implementation of overlayfs in FUSE for rootless containers. Prior to 1.17, the release-1.x C branch preserves SUID and SGID mode bits in main.c during open(O_TRUNC) and truncate handling on a copied-up file, allowing a low-privileged process to leave the upper-layer file with mode 4777. This issue is fixed in version 1.17.","ecosystems":["Red Hat:hummingbird:1","SUSE:Enterprise Storage 7.1","SUSE:Linux Enterprise Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Module for Containers 15 SP7","SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server for SAP applications 16.0","SUSE:Linux Micro 6.0","SUSE:Linux Micro 6.2","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"fuse-overlayfs release-1.x preserves SUID/SGID bits after truncate/open(O_TRUNC)","id":"CVE-2026-52791","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":12,"n_references":3,"next":{"headline":"Algernon: Server-side script source disclosure on Windows via NTFS filename","id":"CVE-2026-52792"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.17-1.hum1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/redhat/fuse-overlayfs","source":"RHSA-2026:52805"},{"ecosystem":"SUSE:Enterprise Storage 7.1","fixed":["1.1.2-150100.3.14.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Enterprise%20Storage%207.1","source":"SUSE-SU-2026:4026-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["1.1.2-150100.3.14.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2026:4026-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["1.1.2-150100.3.14.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2026:4026-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["1.1.2-150100.3.14.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2026:4026-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Containers 15 SP7","fixed":["1.1.2-150100.3.14.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Containers%2015%20SP7","source":"SUSE-SU-2026:4026-1"},{"ecosystem":"SUSE:Linux Enterprise Server 16.0","fixed":["1.15-160000.3.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Server%2016.0","source":"SUSE-SU-2026:23618-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","fixed":["1.15-160000.3.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0","source":"SUSE-SU-2026:23618-1"},{"ecosystem":"SUSE:Linux Micro 6.0","fixed":["1.12-2.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Micro%206.0","source":"SUSE-SU-2026:23252-1"},{"ecosystem":"SUSE:Linux Micro 6.2","fixed":["1.15-160000.3.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/suse/fuse-overlayfs\u0026distro=SUSE%20Linux%20Micro%206.2","source":"SUSE-SU-2026:23469-1"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["1.15-160000.3.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/opensuse/fuse-overlayfs\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-SU-2026:21753-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.17-1.1"],"introduced":["0"],"last_affected":[],"package":"fuse-overlayfs","purl":"pkg:rpm/opensuse/fuse-overlayfs\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11461-1"}],"prev":{"headline":"OpenProject: SQL injection in timestamps functionality","id":"CVE-2026-52785"},"products":["fuse-overlayfs"],"published":"2026-07-29","related":[],"sources":[{"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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["containers"]},"summary":"A low-privileged process can retain SUID/SGID bits on copied-up files in fuse-overlayfs, enabling privilege escalation in rootless containers.","url":"https://insights.sbomify.com/CVE-2026-52791/"}