{"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-2026-61794 exists.","fix":"Upgrade github.com/projectcapsule/capsule to 0.13.7 or later.","what":"CVE-2026-61794 is a medium-severity denial of service vulnerability in projectcapsule capsule, published on 18 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-61794 and fix it if it is affected.\n\nWhat it is: CVE-2026-61794 is a medium-severity denial of service vulnerability in projectcapsule capsule, published on 18 Sep 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-2026-61794 exists.\n\nAffected packages and fixed versions:\n- github.com/projectcapsule/capsule (Go): affected from 0.13.0; fixed in 0.13.7\n- github.com/projectcapsule/capsule (Go): affected from 0.13.0; fixed in 0.13.7\n- github.com/projectcapsule/capsule (Go): affected from 0.13.0; fixed in 0.13.7\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-2026-61794/ (Markdown: https://insights.sbomify.com/CVE-2026-61794/index.md)","id":"CVE-2026-61794","markdown":"https://insights.sbomify.com/CVE-2026-61794/index.md","name":"CVE-2026-61794","record":{"aliases":["GHSA-gxjc-74v5-3vx3","GO-2026-6521"],"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":"An administrator can cause a panic in namespace admission by persisting a malformed regex, denying namespace operations for the affected tenant.","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-20","name":"Improper Input Validation"}],"description":"Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, the Tenant update validation in internal/webhook/tenant/validation/forbidden_annotations_regex.go compiles ForbiddenLabels.Regex for both the labels and annotations checks instead of validating ForbiddenAnnotations.Regex. An administrator who can update a Tenant can therefore persist a malformed ForbiddenAnnotations.Regex while leaving the labels expression valid. Namespace creation or update later passes the stored expression through pkg/api/forbidden_list.go, where regexp.MustCompile can panic during forbidden metadata validation and deny namespace operations for the affected tenant. This issue is fixed in version 0.13.7.","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: Malformed ForbiddenAnnotations.Regex can bypass Tenant validation and trigger namespace admission panic","id":"CVE-2026-61794","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation","id":"CVE-2026-61795"},"packages":[{"ecosystem":"Go","fixed":["0.13.7"],"introduced":["0.13.0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":null,"source":"GHSA-gxjc-74v5-3vx3"},{"ecosystem":"Go","fixed":["0.13.7"],"introduced":["0.13.0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","source":"GHSA-gxjc-74v5-3vx3"},{"ecosystem":"Go","fixed":["0.13.7"],"introduced":["0.13.0"],"last_affected":[],"package":"github.com/projectcapsule/capsule","purl":"pkg:golang/github.com/projectcapsule/capsule","source":"GO-2026-6521"}],"prev":{"headline":"Nuxt OG Image has unauthenticated SSRF via `fonts[].path` URL parameter","id":"CVE-2026-61793"},"products":["capsule"],"published":"2026-09-18","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":"2026-09-22","vendors":["projectcapsule"]},"summary":"An administrator can cause a panic in namespace admission by persisting a malformed regex, denying namespace operations for the affected tenant.","url":"https://insights.sbomify.com/CVE-2026-61794/"}