{"answers":{"affected":"4 open source packages ship an affected version, including github.com/openbao/openbao and openbao. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-40264 in the wild and no public exploit code.","fix":"Upgrade github.com/openbao/openbao to 0.0.0-20260420162526-f58111d2ca54 or later.","what":"CVE-2026-40264 is a low-severity missing authorization vulnerability in openbao, published on 21 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-40264 and fix it if it is affected.\n\nWhat it is: CVE-2026-40264 is a low-severity missing authorization vulnerability in openbao, published on 21 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-40264 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/openbao/openbao (Go): affected all versions; fixed in 0.0.0-20260420162526-f58111d2ca54\n- github.com/openbao/openbao (Go): affected all versions; fixed in 0.0.0-20260420162526-f58111d2ca54\n- github.com/openbao/openbao (Go): affected all versions; fixed in 0.0.0-20260420162526-f58111d2ca54\n- openbao (Bitnami): affected all versions; fixed in 2.5.3\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-2026-40264/ (Markdown: https://insights.sbomify.com/CVE-2026-40264/index.md)","id":"CVE-2026-40264","markdown":"https://insights.sbomify.com/CVE-2026-40264/index.md","name":"CVE-2026-40264","record":{"aliases":["BIT-openbao-2026-40264","GHSA-p49j-v9wc-wg57","GO-2026-5526"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenBao secrets manager","requires_auth":"high_privilege","summary":"A privileged administrator in one tenant can revoke or renew tokens in another tenant by exploiting cross-namespace token accessor handling.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"openbao","vendor":"openbao"}],"cvss":{"score":2,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1259","name":"Improper Restriction of Security Token Assignment"}],"description":"OpenBao is an open source identity-based secrets management system. OpenBao's namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3.","ecosystems":["Bitnami","Go"],"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":"OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation","id":"CVE-2026-40264","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Note Mark has Broken Access Control on Asset Download","id":"CVE-2026-40265"},"packages":[{"ecosystem":"Bitnami","fixed":["2.5.3"],"introduced":["0"],"last_affected":[],"package":"openbao","purl":"pkg:bitnami/openbao","source":"BIT-openbao-2026-40264"},{"ecosystem":"Go","fixed":["0.0.0-20260420162526-f58111d2ca54"],"introduced":["0"],"last_affected":[],"package":"github.com/openbao/openbao","purl":null,"source":"GHSA-p49j-v9wc-wg57"},{"ecosystem":"Go","fixed":["0.0.0-20260420162526-f58111d2ca54"],"introduced":["0"],"last_affected":[],"package":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","source":"GHSA-p49j-v9wc-wg57"},{"ecosystem":"Go","fixed":["0.0.0-20260420162526-f58111d2ca54"],"introduced":["0"],"last_affected":[],"package":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","source":"GO-2026-5526"}],"prev":{"headline":"Note Mark: Username Enumeration via Login Endpoint Timing Side-Channel","id":"CVE-2026-40263"},"products":["openbao"],"published":"2026-04-21","related":[{"cvss_score":9.6,"headline":"OpenBao lacks user confirmation for OIDC direct callback mode","id":"CVE-2026-33757","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":9.4,"headline":"OpenBao has Reflected XSS in its OIDC authentication error message","id":"CVE-2026-33758","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":9.1,"headline":"OpenBao: Privileged Operator May Execute Code on the Underlying Host","id":"CVE-2025-54997","kev_date_added":null,"published":"2025-08-09"},{"cvss_score":7.5,"headline":"OpenBao Privileged Operator Identity Group Root Escalation","id":"CVE-2025-64761","kev_date_added":null,"published":"2025-11-25"},{"cvss_score":7.5,"headline":"OpenBao vulnerable to denial of service via malicious JSON request processing","id":"CVE-2025-59043","kev_date_added":null,"published":"2025-10-17"},{"cvss_score":7.2,"headline":"OpenBao Root Namespace Operator May Elevate Token Privileges","id":"CVE-2025-54996","kev_date_added":null,"published":"2025-08-09"},{"cvss_score":6.9,"headline":"OpenBao Vulnerable to Unauthenticated Rekey Operation Cancellation","id":"CVE-2025-52894","kev_date_added":null,"published":"2025-06-25"}],"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":"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":"US public information, NVD API terms","name":"NVD"},{"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":"2026-04-21","vendors":["openbao"]},"summary":"A privileged administrator in one tenant can revoke or renew tokens in another tenant by exploiting cross-namespace token accessor handling.","url":"https://insights.sbomify.com/CVE-2026-40264/"}