{"id":"CVE-2025-8396","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-8396","generatedAt":"2026-10-28T00:18:02.165Z","title":"Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3,…","description":"Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.","published":"2025-09-15T15:15:55.000Z","lastModified":"2026-06-17T10:06:53.000Z","status":"Deferred","sourceIdentifier":"security@temporal.io","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-770"],"affected":[],"epss":{"score":0.00388,"percentile":0.32622,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/temporalio/temporal/releases/tag/v1.26.3","source":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/releases/tag/v1.27.3","source":"security@temporal.io"},{"url":"https://github.com/temporalio/temporal/releases/tag/v1.28.1","source":"security@temporal.io"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-8396","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}