Is CVE-2026-72587 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-72587?

CVE-2026-72587 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-72587

Description

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.