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CVE-2026-9304

A security flaw has been discovered in calcom cal.diy up to 4.9.4. The affected element is the function validateUrlForSSRF of the file apps/web/app/api/logo/route.ts of the component Logo API. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bbb251b00492154eb58ec0bed2ca14d44b5c9ba73da9fbd7325dda0c4095f712
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":2.3,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":4.6,"vectorString":"AV:N/AC:H/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/3/cvssV2_0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*"],"modules":["Logo API"],"product":"cal.diy","vendor":"calcom","versions":[{"status":"affected","version":"4.9.0"},{"status":"affected","version":"4.9.1"},{"status":"affected","version":"4.9.2"},{"status":"affected","version":"4.9.3"},{"status":"affected","version":"4.9.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":2.3,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":4.6,"vectorString":"AV:N/AC:H/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"Server-Side Request Forgery","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["exploit"],"url":"https://gist.github.com/YLChen-007/b3d0b85767b7e346a291933d602fbb3b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/references/3
{"name":"Submit #812176 | cal.com <= v4.9.4 Server-Side Request Forgery (CWE-918)","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/812176"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/references/2
{"name":"VDB-365251 | calcom cal.diy Logo API route.ts validateUrlForSSRF server-side request forgery","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/365251"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/references/0
{"name":"VDB-365251 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/365251/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a670e948fdc7a91be0c7096ebd986ad1bf0bc51d42a589de1a99e52cc61caa29 · sha256:998ad97cf49a9edb… · /containers/cna/references/1

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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