{"id":"CVE-2026-93748","revision":"0f554453d6e141298f61471c8fe98a65","records":[{"revision":"0f554453d6e141298f61471c8fe98a65","observedAt":"2026-11-06T21:03:40.565+00:00","statement":{"source":"nvd","id":"CVE-2026-93748","aliases":[],"title":"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…","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":"2026-09-18T18:18:33.33+00:00","modifiedAt":"2026-11-05T15:17:27.427+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","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","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://github.com/kornelski/http-cache-semantics/issues/56","https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-user-cache-disclosure-via-max-stale","https://github.com/advisories/GHSA-ch52-4w7c-c8xp","https://github.com/github/advisory-database/issues/10139","https://github.com/kornelski/http-cache-semantics/issues/56#issuecomment-5975759591"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93748","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-524"],"productCriteria":[],"sourceDates":{"published":"2026-09-18T18:18:33.330","lastModified":"2026-11-05T15:17:27.427"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-93748","identifiers":["CVE-2026-93748"]},"retained":false,"historicalAffected":[]}],"coverage":[]}