Critical
Cal.com through 4.7.15 Cross-Site Scripting via booking questions
Type: advisorySources: OSV
Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP, so an attacker who can create an event type with a malicious booking question label can inject arbitrary HTML/JavaScript that executes when a victim visits the booking view URL. Self-hosted instances with open registration are particularly at risk. The issue is fixed in version 4.7.16.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-58353, CVE-2024-58355
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 01:07 UTC · Revision 1
Source evidence
Cal.com through 4.7.15 Cross-Site Scripting via booking questions
core-osv · Original sourcePublished 23 Jul 2026, 21:16 UTC
Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP, so an attacker who can create an event type with a malicious booking question label can inject arbitrary HTML/JavaScript that executes when a victim visits the booking view URL. Self-hosted instances with open registration are particularly at risk. The issue is fixed in version 4.7.16.
osv:CVE-2024-58353
Complete source record
{
"id": "7cd2d80ec8b3f28047e0235430e07a0e42e7eac2eb2856026cd04230de494ff0",
"url": "https://osv.dev/vulnerability/CVE-2024-58353",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Cal.com through 4.7.15 Cross-Site Scripting via booking questions",
"summary": "Cal.com (repository calcom/cal.diy) in versions <= 4.7.15 is vulnerable to cross-site scripting (XSS) on the publicly accessible single booking view (e.g., /booking/). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP, so an attacker who can create an event type with a malicious booking question label can inject arbitrary HTML/JavaScript that executes when a victim visits the booking view URL. Self-hosted instances with open registration are particularly at risk. The issue is fixed in version 4.7.16.",
"evidence": "osv:CVE-2024-58353",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2024-58353",
"aliases": [
"CVE-2024-58353",
"CVE-2024-58355",
"GHSA-vgj7-76cw-h6f8"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/calcom/cal.diy",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "00689fda0a30b8f933c096f02c1fe092a4206def"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "4.7.15"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "00689fda0a30b8f933c096f02c1fe092a4206def"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-58353.json"
}
}
],
"modified": "2026-10-28T02:30:52.538571060Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58353.json",
"https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8",
"https://nvd.nist.gov/vuln/detail/CVE-2024-58353",
"https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions",
"https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def"
],
"provider_metadata": {
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"CWE-80"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58353.json"
}
},
"related_cves": [
{
"value": "CVE-2024-58353",
"evidence": "/id"
},
{
"value": "CVE-2024-58355",
"evidence": "/aliases"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 521202,
"published_at": "2026-07-23T21:16:42.87+00:00"
}