{"answers":{"affected":"1 open source package ship an affected version, including consul.","exploited":"There is no known exploitation of CVE-2026-88021 in the wild and no public exploit code.","fix":"Upgrade consul to 2.0.4 or later.","what":"CVE-2026-88021 is a high-severity authentication bypass vulnerability in HashiCorp Consul, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-88021 and fix it if it is affected.\n\nWhat it is: CVE-2026-88021 is a high-severity authentication bypass vulnerability in HashiCorp Consul, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-88021 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- consul (Bitnami): affected from 1.9.0; fixed in 2.0.4\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-2026-88021/ (Markdown: https://insights.sbomify.com/CVE-2026-88021/index.md)","id":"CVE-2026-88021","markdown":"https://insights.sbomify.com/CVE-2026-88021/index.md","name":"CVE-2026-88021","record":{"aliases":["BIT-consul-2026-88021","GHSA-9p3q-p26q-fxxc","MINI-f6wr-99pf-h2vc","MINI-hv3j-3x8j-3q96","UBUNTU-CVE-2026-88021"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Service mesh software","requires_auth":"low_privilege","summary":"Attackers can bypass Connect service mesh authorization rules to access unauthorized destinations due to improper character escaping in generated RBAC policies.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"HashiCorp","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-185","name":"Incorrect Regular Expression"}],"description":"Consul and Consul Enterprise are vulnerable to an authorization bypass in the Connect service mesh that may allow a service to reach a destination it is not authorized to access. When building Envoy RBAC rules to enforce Connect intentions, Consul did not correctly escape certain characters in service names, namespaces, and partitions, causing the generated authorization rules to match more broadly than intended. This vulnerability (CVE-2026-88021) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.","ecosystems":["Bitnami"],"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":"Consul vulnerable to an authorization bypass in the Connect service mesh","id":"CVE-2026-88021","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"SQL injection in Laravel MongoDB (PHP)","id":"CVE-2026-88022"},"packages":[{"ecosystem":"Bitnami","fixed":["2.0.4"],"introduced":["1.9.0"],"last_affected":[],"package":"consul","purl":"pkg:bitnami/consul","source":"BIT-consul-2026-88021"}],"prev":{"headline":"Improper Neutralization of Input During Web Page Generation in OpenPLC Runtime v3","id":"CVE-2026-88020"},"products":["Consul","Consul Enterprise"],"published":"2026-09-10","related":[],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-02","vendors":["HashiCorp"]},"summary":"Attackers can bypass Connect service mesh authorization rules to access unauthorized destinations due to improper character escaping in generated RBAC policies.","url":"https://insights.sbomify.com/CVE-2026-88021/"}