{"id":"CVE-2026-56232","state":"PUBLISHED","title":"Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header","description":"Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey.","publishedAt":"2026-06-24T11:53:09.410Z","updatedAt":"2026-06-24T12:14:32.062Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Capgo Capgo"],"affected":[{"vendor":"Capgo","product":"Capgo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"12.128.2","versionType":"semver"},{"version":"12.128.2","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/Cap-go/capgo/security/advisories/GHSA-2h89-vcvx-5pvh","https://www.vulncheck.com/advisories/capgo-subkey-scope-bypass-in-middlewarekey-via-x-limited-key-id-header"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56232.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56232","state":"PUBLISHED","datePublished":"2026-06-24T11:53:09.410Z","dateUpdated":"2026-06-24T12:14:32.062Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-06-19T21:50:06.624Z"},"containers":{"cna":{"title":"Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header","descriptions":[{"lang":"en","value":"Capgo before 12.128.2 fails to enforce limited_to_orgs and limited_to_apps constraints on subkeys provided via x-limited-key-id header in middlewareKey function. Attackers can bypass subkey scope restrictions by referencing their own subkeys, causing all downstream route handlers to use the unrestricted parent key instead of the scoped subkey."}],"affected":[{"vendor":"Capgo","product":"Capgo","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"12.128.2","versionType":"semver"},{"version":"12.128.2","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-2h89-vcvx-5pvh","name":"GitHub Security Advisory (GHSA-2h89-vcvx-5pvh)","tags":["vendor-advisory"]},{"url":"https://www.vulncheck.com/advisories/capgo-subkey-scope-bypass-in-middlewarekey-via-x-limited-key-id-header","name":"VulnCheck Advisory: Capgo - Subkey Scope Bypass in middlewareKey via x-limited-key-id Header","tags":["third-party-advisory"]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS"},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-06-24T11:53:09.410Z"},"datePublic":"2026-05-07T00:00:00.000Z","credits":[{"lang":"en","value":"Judel777","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Cap-go/capgo/security/advisories/GHSA-2h89-vcvx-5pvh","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-24T12:14:10.341117Z","id":"CVE-2026-56232","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-24T12:14:32.062Z"}}]}}}