{"id":"CVE-2026-93748","revision":"68d91c58889c4f958813a8bbe137f3fd","records":[{"revision":"68d91c58889c4f958813a8bbe137f3fd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93748","aliases":[],"title":"http-cache-semantics through 4.2.0 Cross-User Cache Disclosure via max-stale","description":"http-cache-semantics through 4.2.0 fails to properly validate security-zeroed cache entries when processing client max-stale directives, allowing unauthenticated attackers to retrieve cached responses belonging to other users. Attackers can request the same URL with a large max-stale value to obtain another user's Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.","state":0,"publishedAt":"2026-09-18T17:51:34.262+00:00","modifiedAt":"2026-10-14T22:56:47.595+00:00","affected":[{"ecosystem":"Vendor product","name":"http-cache-semantics","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"kornelski\",\n                    \"product\": \"http-cache-semantics\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/http-cache-semantics\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"4.2.0\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/kornelski/http-cache-semantics/issues/56","https://github.com/kornelski/http-cache-semantics","https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L425-L441","https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L603-L623","https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-user-cache-disclosure-via-max-stale"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93748","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93748","identifiers":["CVE-2026-93748"]},"retained":false,"historicalAffected":[]}],"coverage":[]}