{"id":"GHSA-ch52-4w7c-c8xp","revision":"e4d3e8584c514fbeb2304ef366a52c6b","records":[{"revision":"e4d3e8584c514fbeb2304ef366a52c6b","observedAt":"2026-10-28T21:55:29.474+00:00","statement":{"source":"osv","id":"GHSA-ch52-4w7c-c8xp","aliases":["CVE-2026-93748"],"title":"Withdrawn Advisory: http-cache-semantics max-stale handling can disclose cross-user cached responses","description":"### Withdrawn Advisory\nThis advisory has been withdrawn because it's not a valid vulnerability. This link is maintained to preserve external references.\n\n### Original Description\nhttp-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":2,"publishedAt":"2026-09-18T18:31:44+00:00","modifiedAt":"2026-10-28T21:30:03.9191231+00:00","affected":[{"ecosystem":"npm","name":"http-cache-semantics","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"4.2.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"CVSS_V4","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":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-93748","https://github.com/kornelski/http-cache-semantics/issues/56","https://github.com/kornelski/http-cache-semantics/issues/56#issuecomment-5975759591","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://github.com/advisories/GHSA-ch52-4w7c-c8xp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-ch52-4w7c-c8xp","identifiers":["GHSA-ch52-4w7c-c8xp","CVE-2026-93748"]},"retained":false,"historicalAffected":[]}],"coverage":[]}