CVE-2025-71389: Cal.com before 5.9.9 Remote Code Execution via RSC
calcom · cal.diy
Fixed in 5.9.9 · Affected: calcom cal.diy before 5.9.9 · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 72% of scored CVEs
DescriptionCVE.org
Cal.com (calcom/cal.diy) before 5.9.9 is vulnerable to unauthenticated remote code execution because it bundles a version of Next.js whose React Server Components (RSC) request handling deserializes attacker-controlled input. A remote attacker can send a crafted RSC request to the server and cause arbitrary code to be executed during server-side processing, without authentication or user interaction. The flaw derives from the upstream Next.js vulnerability CVE-2025-55182 and is resolved in 5.9.9 by updating the affected dependency.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- calcom · cal.diybefore 5.9.9
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No CyberSIXT article names CVE-2025-71389 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.