PT-2026-42883 · Cal.Com · Cal.Com

Eric-Z · Published 2026-05-23 · Updated 2026-05-23 · CVE-2026-9303

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions calcom cal.diy versions prior to 4.9.5

Description A cross-site request forgery (CSRF) issue exists in an unknown function, allowing a remote attacker to initiate an attack. CSRF is a type of attack that tricks a victim into performing actions they did not intend to do on a web application where they are currently authenticated.

Recommendations Update to a version newer than 4.9.4.

Exploit

Fix

CSRF

Missing Authorization

Weakness Enumeration

CWE-352

CWE-862

Related Identifiers

CVE-2026-9303

Affected Products

Cal.Com

References · 8

• 🔥 https://gist.github.com/YLChen-007/dafada36e356bc895b09829d8ec57e49 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-9303 · Security Note
• https://vuldb.com/vuln/365250 · Note
• https://gist.github.com/YLChen-007/26663d9558e15994176dc420d2e11d48 · Note
• https://vuldb.com/submit/812173 · Note
• https://t.me/CVEtracker/54713 · Telegram Post
• https://vuldb.com/vuln/365250/cti · Note
• https://vuldb.com/submit/812175 · Note