{"id":"CVE-2026-44457","state":"PUBLISHED","title":"Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, Cache Middleware does not skip caching for responses that declare per-user variance via Vary: Authorization or Vary: Cookie. As a result, a response cached for one authenticated user may be served to subsequent requests from different users. This vulnerability is fixed in 4.12.18.","publishedAt":"2026-05-13T14:58:52.931Z","updatedAt":"2026-05-18T14:07:53.005Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["honojs hono"],"affected":[{"vendor":"honojs","product":"hono","versions":[{"version":"< 4.12.18","status":"affected"}]}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rm"],"weaknesses":["CWE-524"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44457.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44457","state":"PUBLISHED","datePublished":"2026-05-13T14:58:52.931Z","dateUpdated":"2026-05-18T14:07:53.005Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T15:49:25.193Z"},"containers":{"cna":{"title":"Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage","descriptions":[{"lang":"en","value":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, Cache Middleware does not skip caching for responses that declare per-user variance via Vary: Authorization or Vary: Cookie. As a result, a response cached for one authenticated user may be served to subsequent requests from different users. This vulnerability is fixed in 4.12.18."}],"affected":[{"vendor":"honojs","product":"hono","versions":[{"version":"< 4.12.18","status":"affected"}]}],"references":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rm","name":"https://github.com/honojs/hono/security/advisories/GHSA-p77w-8qqv-26rm","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-524","lang":"en","description":"CWE-524: Use of Cache Containing Sensitive Information","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-13T14:59:27.412Z"},"source":{"advisory":"GHSA-p77w-8qqv-26rm","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-18T14:06:33.297435Z","id":"CVE-2026-44457","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-18T14:07:53.005Z"}}]}}}