CVE-2026-23478

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Source
https://cve.org/CVERecord?id=CVE-2026-23478
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23478.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23478
Aliases
  • GHSA-7hg4-x4pr-3hrg
Published
2026-01-13T21:37:35Z
Modified
2026-10-28T02:30:48Z
Severity
  • 10.0 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L CVSS Calculator
Summary
Cal.com has an Authentication Bypass via Unvalidated Email in Custom JWT Callback
Details

Cal.com is open-source scheduling software. From 3.1.6 to before 6.0.7, there is a vulnerability in a custom NextAuth JWT callback that allows attackers to gain full authenticated access to any user's account by supplying a target email address via session.update(). This vulnerability is fixed in 6.0.7.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-602",
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23478.json"
}
References

Affected packages

Git / github.com/calcom/cal.diy

Affected ranges

Type
GIT
Repo
https://github.com/calcom/cal.diy
Events
Introduced
a9344115d21010424e562509bc763d0b461dac29
Fixed
0099c72f53957a1b65163f8176eeb718ad3664f8
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "3.1.6"
                },
                {
                    "fixed": "6.0.7"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "cpe": "cpe:2.3:a:cal:cal.com:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.1.6"
                },
                {
                    "fixed": "6.0.7"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Affected versions

@calcom/atoms@1.*
@calcom/atoms@1.0.110
@calcom/atoms@1.0.112
@calcom/atoms@1.0.114
@calcom/atoms@1.1.0
@calcom/atoms@1.1.2
@calcom/atoms@1.10.0
@calcom/atoms@1.11.0
@calcom/atoms@1.12.1
@calcom/atoms@1.2.0
@calcom/atoms@1.3.0
@calcom/atoms@1.3.1
@calcom/atoms@1.4.0
@calcom/atoms@1.5.0
@calcom/atoms@1.6.0
@calcom/atoms@1.7.0
@calcom/atoms@1.7.1
@calcom/atoms@1.8.0
@calcom/atoms@1.9.0
v3.*
v3.1.6
v3.1.7
v3.1.8
v3.1.9
v3.2.0
v3.2.1
v3.2.10
v3.2.2
v3.2.3
v3.2.4
v3.2.5
v3.2.6
v3.2.7
v3.2.7.1
v3.2.8
v3.2.9
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.3.7
v3.4.0
v3.4.0-rc1
v3.4.1
v3.4.10
v3.4.2
v3.4.3
v3.4.4
v3.4.4-rc1
v3.4.5
v3.4.6
v3.4.7
v3.4.8
v3.4.9
v3.5.0
v3.5.1
v3.5.2
v3.5.3
v3.5.4
v3.5.5
v3.6.0
v3.6.1
v3.6.2
v3.6.3
v3.6.4
v3.7.0
v3.7.1
v3.7.10
v3.7.11
v3.7.12
v3.7.13
v3.7.14
v3.7.15
v3.7.16
v3.7.17
v3.7.18
v3.7.19
v3.7.2
v3.7.3
v3.7.4
v3.7.5
v3.7.6
v3.7.7
v3.7.8
v3.7.9
v3.8.0
v3.8.0-rc1
v3.8.1
v3.8.2
v3.8.3
v3.8.4
v3.8.5
v3.8.6
v3.8.7
v3.8.8
v3.8.9
v3.9.0
v3.9.1
v3.9.2
v3.9.3
v3.9.4
v3.9.5
v3.9.6
v3.9.7
v3.9.8
v3.9.9
v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.0.4
v4.0.5
v4.0.6
v4.0.7
v4.0.8
v4.0.9
v4.1.0
v4.1.1
v4.1.10
v4.1.11
v4.1.12
v4.1.2
v4.1.3
v4.1.4
v4.1.5
v4.1.6
v4.1.7
v4.1.8
v4.1.9
v4.2.0
v4.2.1
v4.2.2
v4.2.3
v4.2.4
v4.2.5
v4.3.0
v4.3.1
v4.3.2
v4.3.3
v4.3.4
v4.3.5
v4.3.6
v4.4.0
v4.4.1
v4.4.2
v4.4.3
v4.4.4
v4.4.5
v4.4.6
v4.4.7
v4.4.8
v4.4.9
v4.5.0
v4.5.1
v4.5.10
v4.5.11
v4.5.2
v4.5.3
v4.5.4
v4.5.5
v4.5.6
v4.5.7
v4.5.8
v4.5.9
v4.6.0
v4.6.1
v4.6.10
v4.6.11
v4.6.12
v4.6.13
v4.6.14
v4.6.15
v4.6.16
v4.6.17
v4.6.18
v4.6.19
v4.6.2
v4.6.20
v4.6.21
v4.6.22
v4.6.23
v4.6.24
v4.6.3
v4.6.4
v4.6.5
v4.6.6
v4.6.7
v4.6.8
v4.6.9
v4.7.0
v4.7.1
v4.7.10
v4.7.11
v4.7.12
v4.7.13
v4.7.14
v4.7.15
v4.7.16
v4.7.17
v4.7.18
v4.7.19
v4.7.2
v4.7.20
v4.7.21
v4.7.22
v4.7.23
v4.7.24
v4.7.25
v4.7.3
v4.7.4
v4.7.5
v4.7.6
v4.7.7
v4.7.8
v4.7.9
v4.8.0
v4.8.1
v4.8.10
v4.8.11
v4.8.12
v4.8.13
v4.8.14
v4.8.15
v4.8.16
v4.8.18
v4.8.19
v4.8.2
v4.8.3
v4.8.4
v4.8.5
v4.8.6
v4.8.7
v4.8.8
v4.8.9
v4.9.0
v4.9.1
v4.9.1-rc1
v4.9.10
v4.9.11
v4.9.12
v4.9.13
v4.9.2
v4.9.3
v4.9.4
v4.9.5
v4.9.6
v4.9.7
v4.9.8
v4.9.9
v5.*
v5.0.0
v5.0.1
v5.0.10
v5.0.11
v5.0.12
v5.0.13
v5.0.14
v5.0.15
v5.0.17
v5.0.18
v5.0.19
v5.0.2
v5.0.20
v5.0.3
v5.0.4
v5.0.5
v5.0.6
v5.0.7
v5.0.8
v5.0.9
v5.1.0
v5.1.1
v5.1.10
v5.1.11
v5.1.12
v5.1.13
v5.1.14
v5.1.15
v5.1.16
v5.1.17
v5.1.18
v5.1.19
v5.1.2
v5.1.20
v5.1.21
v5.1.3
v5.1.4
v5.1.5
v5.1.6
v5.1.7
v5.1.8
v5.1.9
v5.2.0
v5.2.1
v5.2.10
v5.2.11
v5.2.12
v5.2.13
v5.2.14
v5.2.15
v5.2.16
v5.2.17
v5.2.2
v5.2.3
v5.2.4
v5.2.5
v5.2.6
v5.2.7
v5.2.8
v5.2.9
v5.3.0
v5.3.1
v5.3.10
v5.3.11
v5.3.12
v5.3.13
v5.3.2
v5.3.3
v5.3.4
v5.3.5
v5.3.6
v5.3.7
v5.3.8
v5.3.9
v5.4.0
v5.4.1
v5.4.10
v5.4.11
v5.4.12
v5.4.13
v5.4.14
v5.4.15
v5.4.16
v5.4.17
v5.4.19
v5.4.2
v5.4.20
v5.4.3
v5.4.4
v5.4.5
v5.4.6
v5.4.7
v5.4.8
v5.4.9
v5.5.0
v5.5.1
v5.5.10
v5.5.11
v5.5.12
v5.5.13
v5.5.14
v5.5.15
v5.5.16
v5.5.17
v5.5.18
v5.5.2
v5.5.3
v5.5.4
v5.5.5
v5.5.6
v5.5.7
v5.5.8
v5.5.9
v5.6.0
v5.6.1
v5.6.10
v5.6.11
v5.6.12
v5.6.13
v5.6.14
v5.6.15
v5.6.16
v5.6.17
v5.6.18
v5.6.19
v5.6.2
v5.6.20
v5.6.3
v5.6.4
v5.6.5
v5.6.6
v5.6.7
v5.6.8
v5.6.9
v5.7.0
v5.7.1
v5.7.10
v5.7.11
v5.7.12
v5.7.2
v5.7.3
v5.7.4
v5.7.5
v5.7.6
v5.7.7
v5.7.8
v5.7.9
v5.8.0
v5.8.1
v5.8.10
v5.8.11
v5.8.12
v5.8.13
v5.8.14
v5.8.3
v5.8.4
v5.8.5
v5.8.6
v5.8.7
v5.8.8
v5.8.9
v5.9.0
v5.9.1
v5.9.10
v5.9.11
v5.9.12
v5.9.13
v5.9.14
v5.9.15
v5.9.2
v5.9.3
v5.9.4
v5.9.5
v5.9.6
v5.9.7
v5.9.8
v5.9.9
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.0.3
v6.0.4
v6.0.5
v6.0.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23478.json"