CVE-2026-72587
Instatic - Cache Poisoning via Unauthenticated Server Island Endpoint
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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/<nodeId> server island endpoint.
| CWE | CWE-444 |
| Vendor | corebunch |
| Product | instatic |
| Published | Aug 10, 2026 |
| Last Updated | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
CoreBunch / Instatic
0 ≤ 0.0.14
Credits
Komiljon Ayubov