{"id":"EUVD-2026-83253","revision":"cd12a50074af4eaa9d8561b681251275","records":[{"revision":"cd12a50074af4eaa9d8561b681251275","observedAt":"2026-11-05T14:41:50.785+00:00","statement":{"source":"euvd","id":"EUVD-2026-83253","aliases":["CVE-2026-93748","GHSA-ch52-4w7c-c8xp"],"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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD 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":null}],"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://euvd.enisa.europa.eu/vulnerability/EUVD-2026-83253","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 18, 2026, 5:51:34 PM","dateUpdated":"Oct 14, 2026, 10:56:47 PM"},"relatedAdvisories":[{"id":"RHSA-2026:92307","title":"Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.13.14 security update","vulnerabilityIds":["CVE-2026-14199","CVE-2026-15815","CVE-2026-33818","CVE-2026-37236","CVE-2026-39834","CVE-2026-56853","CVE-2026-56854","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-63209","CVE-2026-77354","CVE-2026-77405","CVE-2026-77411","CVE-2026-84304","CVE-2026-84375","CVE-2026-84445","CVE-2026-88031","CVE-2026-93748","CVE-2026-106445","CVE-2026-106446"]},{"id":"RHSA-2026:88198","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.10.6 release.","vulnerabilityIds":["CVE-2026-84782","CVE-2026-90711","CVE-2026-93748","CVE-2026-93749","CVE-2026-101916"]},{"id":"WID-SEC-W-2026-4056","title":"Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye und Jira): Mehrere Schwachstellen","vulnerabilityIds":["CVE-2026-101898","CVE-2026-101901","CVE-2026-101903","CVE-2026-101905","CVE-2026-101906","CVE-2026-101907","CVE-2026-101909","CVE-2026-12185","CVE-2026-12802","CVE-2026-12860","CVE-2026-13006","CVE-2026-13676","CVE-2026-14682","CVE-2026-18036","CVE-2026-19534","CVE-2026-19693","CVE-2026-41842","CVE-2026-41845","CVE-2026-41850","CVE-2026-49434","CVE-2026-50750","CVE-2026-53404","CVE-2026-54399","CVE-2026-54428","CVE-2026-54512","CVE-2026-54513","CVE-2026-55153","CVE-2026-55831","CVE-2026-55833","CVE-2026-56624","CVE-2026-56745","CVE-2026-58061","CVE-2026-58062","CVE-2026-59641","CVE-2026-59645","CVE-2026-59651","CVE-2026-59903","CVE-2026-62243","CVE-2026-65182","CVE-2026-65183","CVE-2026-65637","CVE-2026-65927","CVE-2026-66422","CVE-2026-67213","CVE-2026-67214","CVE-2026-68494","CVE-2026-68495","CVE-2026-68497","CVE-2026-68498","CVE-2026-68525","CVE-2026-68569","CVE-2026-68763","CVE-2026-71888","CVE-2026-71889","CVE-2026-71891","CVE-2026-73086","CVE-2026-73507","CVE-2026-73508","CVE-2026-73634","CVE-2026-73635","CVE-2026-73646","CVE-2026-75140","CVE-2026-75595","CVE-2026-75596","CVE-2026-75975","CVE-2026-76172","CVE-2026-77185","CVE-2026-84292","CVE-2026-84375","CVE-2026-93488","CVE-2026-93491","CVE-2026-93558","CVE-2026-93690","CVE-2026-93748","CVE-2026-93994"]},{"id":"RHSA-2026:92303","title":"Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.12 security update","vulnerabilityIds":["CVE-2026-33818","CVE-2026-39822","CVE-2026-39834","CVE-2026-56853","CVE-2026-56858","CVE-2026-56859","CVE-2026-56860","CVE-2026-56862","CVE-2026-63209","CVE-2026-84304","CVE-2026-93748","CVE-2026-106445","CVE-2026-106446"]},{"id":"msrc_CVE-2026-93748","title":"http-cache-semantics through 4.2.0 Cross-User Cache Disclosure via max-stale","vulnerabilityIds":["CVE-2026-93748"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-83253","identifiers":["EUVD-2026-83253","CVE-2026-93748","GHSA-ch52-4w7c-c8xp"]},"retained":false,"historicalAffected":[]}],"coverage":[]}