{"id":"CVE-2026-72587","summary":"Instatic - Cache Poisoning via Unauthenticated Server Island Endpoint","details":"A cache poisoning vulnerability in CoreBunch/Instatic through 0.0.14 allows an unauthenticated remote attacker to poison the shared process-wide render cache by manipulating the u query parameter of the GET /_instatic/hole/\u003cnodeId\u003e server island endpoint.","modified":"2026-08-30T03:31:00.824853784Z","published":"2026-08-10T10:41:36.489Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72587.json","cna_assigner":"TuranSec","cwe_ids":["CWE-444"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72587.json"},{"type":"ADVISORY","url":"https://github.com/CoreBunch/Instatic"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72587"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/corebunch/instatic","events":[{"introduced":"0"},{"fixed":"d1f0942b1c1eb8842b032e6718bfbdabf25cd6d0"}],"database_specific":{"source":["AFFECTED_FIELD","DESCRIPTION"],"extracted_events":[{"introduced":"0"},{"last_affected":"0.0.14"},{"fixed":"0.0.14"}]}}],"versions":["v0.0.13","v0.0.12","v0.0.11","v0.0.10","v0.0.9","v0.0.8","v0.0.7","v0.0.6","v0.0.5","v0.0.4","v0.0.3","v0.0.2","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72587.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}