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CVE-2025-71389

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
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:702031f348ea33ac8efc6f0f51c4e11bec4e46d6799a35e3b930a831b9d492bf
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"cal.diy","vendor":"calcom","versions":[{"lessThan":"5.9.9","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"5.9.9","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":10,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-94","description":"Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"Upstream Next.js advisory (CVE-2025-55182)","tags":["related"],"url":"https://github.com/advisories/GHSA-9qr9-h5gf-34mp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/references/2
{"name":"Patch (PR #25592)","tags":["issue-tracking","patch"],"url":"https://github.com/calcom/cal.diy/pull/25592"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/references/1
{"name":"GitHub Security Advisory (GHSA-qjx2-5xqp-cpf4)","tags":["vendor-advisory"],"url":"https://github.com/calcom/cal.diy/security/advisories/GHSA-qjx2-5xqp-cpf4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/references/0
{"name":"VulnCheck Advisory: Cal.com before 5.9.9 Remote Code Execution via RSC","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/cal-com-before-remote-code-execution-via-rsc"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8657f0fadf5ffcbecef7305b2c3199f273c64c8d95d9320e19ea77f8a0252bd5 · sha256:223d49dddf3c0045… · /containers/cna/references/3

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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