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CVE

CVE-2025-71389

Cal.com before 5.9.9 Remote Code Execution via RSC
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CVE

CVE-2025-71389

Cal.com before 5.9.9 Remote Code Execution via RSC

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71389.json, https://github.com/advisories/GHSA-9qr9-h5gf-34mp, https://github.com/calcom/cal.diy/security/advisories/GHSA-qjx2-5xqp-cpf4, https://nvd.nist.gov/vuln/detail/CVE-2025-71389, https://www.vulncheck.com/advisories/cal-com-before-remote-code-execution-via-rsc, https://github.com/calcom/cal.diy/pull/25592

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.012%
EPSS Percentile
0.66123%
Introduced Version
0
Fix Available
46b88a3c81198b99c21abaa7888fefac0eec6c69

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