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CVE-2026-52841

Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, `Google::oauth` at `application/controllers/Google.php:278` stores its URL-supplied `provider_id` in the session, and `oauth_callback` saves the issued Google OAuth token against that row without checking the caller owns the provider. Any logged-in backend user (admin, provider, or secretary) rebinds a peer provider's Google sync to a Google account they control. The peer's appointments then sync into the attac
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5a998be128ae6ec52acfa2e2b96a4bf6604398b309cd313bb65b0ab480f5db1b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"easyappointments","vendor":"alextselegidis","versions":[{"status":"affected","version":"< 1.6.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/alextselegidis/easyappointments/commit/4b2d245d2cd2058dc76e05f6eb65b26699268471","tags":["x_refsource_MISC"],"url":"https://github.com/alextselegidis/easyappointments/commit/4b2d245d2cd2058dc76e05f6eb65b26699268471"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/cna/references/1
{"name":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-8hm4-r66f-29wr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-8hm4-r66f-29wr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/alextselegidis/easyappointments/security/advisories/GHSA-8hm4-r66f-29wr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7905fcd1ab2ee3e5ba1589383d2af084e9e5916a3e52376faf85d3a5b65a6109 · sha256:d2c3a31cb9e7d57c… · /containers/adp/0/references/0

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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