{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58053 exists.","fix":"No fix has been published for CVE-2026-58053 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-58053 is a critical vulnerability in Gitea act_runner, published on 28 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-58053 and fix it if it is affected.\n\nWhat it is: CVE-2026-58053 is a critical vulnerability in Gitea act_runner, published on 28 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58053 exists.\n\nAffected product: Gitea act_runner. 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-2026-58053/ (Markdown: https://insights.sbomify.com/CVE-2026-58053/index.md)","id":"CVE-2026-58053","markdown":"https://insights.sbomify.com/CVE-2026-58053/index.md","name":"CVE-2026-58053","record":{"aliases":["GHSA-8qf9-pc52-j7cm"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Gitea act_runner","requires_auth":"low_privilege","summary":"Attackers can escape Docker containers to gain root access on the host by injecting unsafe container options in Gitea act_runner workflows.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"description":"Gitea act_runner with the Docker backend (through act 0.262.0) passes a workflow's container.options string to the Docker job container's HostConfig and, when configured with privileged: false, forces only the Privileged flag off while merging options such as --pid=host, --cap-add, and --security-opt unchanged. A user who can run a workflow on a Docker-backed runner can create a job container with host namespaces and broad capabilities and escape to the host as root despite privileged mode being disabled.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Gitea act_runner - Container Hardening Bypass via Workflow Container Options","id":"CVE-2026-58053","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-58054"},"packages":[],"prev":{"headline":"7-Zip - Mark-of-the-Web Bypass via RAR5 Alternate Data Stream Name Collision","id":"CVE-2026-58052"},"products":["act_runner"],"published":"2026-06-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-06-30","vendors":["Gitea"]},"summary":"Attackers can escape Docker containers to gain root access on the host by injecting unsafe container options in Gitea act_runner workflows.","url":"https://insights.sbomify.com/CVE-2026-58053/"}