{"answers":{"affected":"3 open source packages ship an affected version, including github.com/projectcapsule/capsule.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-65834 exists.","fix":"Upgrade github.com/projectcapsule/capsule to 0.13.8 or later.","what":"CVE-2026-65834 is a medium-severity denial of service vulnerability in projectcapsule capsule, published on 30 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-65834 and fix it if it is affected.\n\nWhat it is: CVE-2026-65834 is a medium-severity denial of service vulnerability in projectcapsule capsule, published on 30 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-65834 exists.\n\nAffected packages and fixed versions:\n- github.com/projectcapsule/capsule (Go): affected all versions; fixed in 0.13.8\n- github.com/projectcapsule/capsule (Go): affected all versions; fixed in 0.13.8\n- github.com/projectcapsule/capsule (Go): affected all versions; fixed in 0.13.8\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-2026-65834/ (Markdown: https://insights.sbomify.com/CVE-2026-65834/index.md)","id":"CVE-2026-65834","markdown":"https://insights.sbomify.com/CVE-2026-65834/index.md","name":"CVE-2026-65834","record":{"aliases":["GHSA-68cj-mvg9-rgm2","GO-2026-6155"],"analysis":{"component_type":"container_or_infrastructure","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kubernetes multi-tenancy framework","requires_auth":"high_privilege","summary":"A Cluster Admin can cause a denial of service in the node admission webhook by storing malformed regex patterns in Capsule configuration.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to 0.13.8, CapsuleConfiguration.Spec.NodeMetadata.ForbiddenLabels.Regex and CapsuleConfiguration.Spec.NodeMetadata.ForbiddenAnnotations.Regex were not validated by the configuration admission webhook, allowing a Cluster Admin to store a malformed regex that later reached regexp.MustCompile in pkg/api/forbidden_list.go through internal/webhook/node/user_metadata.go and crashed the node admission webhook on Node create, update, or patch requests. This issue is fixed in version 0.13.8.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Capsule: CapsuleConfiguration NodeMetadata regex fields lack webhook validation, allowing MustCompile panic on all Node admission requests","id":"CVE-2026-65834","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Capsule has an incomplete fix of CVE-2026-22872: TenantResource RawItems and Generators still allow cluster-scoped resource creation (cross-tenant privilege escalation)","id":"CVE-2026-65835"},"packages":[{"ecosystem":"Go","fixed":["0.13.8"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":null,"source":"GHSA-68cj-mvg9-rgm2"},{"ecosystem":"Go","fixed":["0.13.8"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","source":"GHSA-68cj-mvg9-rgm2"},{"ecosystem":"Go","fixed":["0.13.8"],"introduced":["0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","source":"GO-2026-6155"}],"prev":{"headline":"Memory corruption in deskflow","id":"CVE-2026-65832"},"products":["capsule"],"published":"2026-07-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-07-31","vendors":["projectcapsule"]},"summary":"A Cluster Admin can cause a denial of service in the node admission webhook by storing malformed regex patterns in Capsule configuration.","url":"https://insights.sbomify.com/CVE-2026-65834/"}