{"id":"CVE-2026-93748","published":"2026-09-18T18:18:33.330","lastModified":"2026-09-23T17:17:49.593","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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-524"],"vendors":[],"products":[],"references":[{"url":"https://github.com/kornelski/http-cache-semantics","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L425-L441","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L603-L623","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/issues/56","tags":[]},{"url":"https://www.vulncheck.com/advisories/http-cache-semantics-through-4.2.0-cross-user-cache-disclosure-via-max-stale","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/issues/56","tags":[]}],"exploitRefs":[{"url":"https://github.com/kornelski/http-cache-semantics","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L425-L441","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/blob/f01112e954b83cfa8765b633ba880e5e980aa54c/index.js#L603-L623","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/issues/56","tags":[]},{"url":"https://github.com/kornelski/http-cache-semantics/issues/56","tags":[]}],"hasPoc":true,"ai":null}