CVE-2026-9349 (GCVE-0-2026-9349)

Vulnerability from cvelistv5 – Published: 2026-05-24 02:30 – Updated: 2026-05-26 13:37
VLAI
Title
calcom cal.diy Generic React API bookings-single-view.getServerSideProps.tsx getServerSideProps information disclosure
Summary
A vulnerability was determined in calcom cal.diy up to 4.9.4. Affected by this issue is the function getServerSideProps of the file apps/web/modules/bookings/views/bookings-single-view.getServerSideProps.tsx of the component Generic React API. This manipulation of the argument cancelledBy/rescheduledBy causes information disclosure. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/365312 vdb-entrytechnical-description
https://vuldb.com/vuln/365312/cti signaturepermissions-required
https://vuldb.com/submit/812177 third-party-advisory
https://gist.github.com/YLChen-007/b59c44d1550c4b… exploit
Impacted products
Vendor Product Version
calcom cal.diy Affected: 4.9.0
Affected: 4.9.1
Affected: 4.9.2
Affected: 4.9.3
Affected: 4.9.4
    cpe:2.3:a:calcom:cal.diy:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Eric-z (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.