CVE-2024-58353

HIGHPre-NVD 8.98.9—
EchelonGraph scoreHIGH confidence

Score 8.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-24. the CNA's CVSS baseline 8.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this weekElevated
8.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.9Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.9
EG Score
8.9(high)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity89% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 24, 2026

Advisory Details (3)

Auto-updated Jul 23, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic Patch Available

Cal.com through 4.7.15 Cross-Site Scripting via booking questions | Advisories | VulnCheck

https://www.vulncheck.com/advisories/cal-com-through-cross-site-scripting-via-booking-questions
github_commit Patch Available

commit 00689fda0a30 (calcom/cal.diy)

Patch available: calcom/cal.diy v6.0.2 (contains commit 00689fda0a30)

https://github.com/calcom/cal.diy/commit/00689fda0a30b8f933c096f02c1fe092a4206def
github Patch Available🟡 PoC Available

XSS via booking view questions · Advisory · calcom/cal.diy · GitHub

https://github.com/calcom/cal.diy/security/advisories/GHSA-vgj7-76cw-h6f8

Vendor Advisories for CVE-2024-58353(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-27 18:15 UTCEG score recompute
  2. 2026-07-27 18:15 UTCGHSA enrichment
  3. 2026-07-27 05:12 UTCGHSA enrichment
  4. 2026-07-26 16:09 UTCEG score recompute
  5. 2026-07-26 16:09 UTCGHSA enrichment
  6. 2026-07-26 14:53 UTCEPSS rescore
  7. 2026-07-26 03:06 UTCEG score recompute
  8. 2026-07-26 03:06 UTCGHSA enrichment
  9. 2026-07-25 14:17 UTCEPSS rescore
  10. 2026-07-25 14:17 UTCEPSS rescore
  11. 2026-07-24 14:16 UTCEPSS rescore
  12. 2026-07-23 21:38 UTCEG score recompute
  13. 2026-07-23 21:36 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2024-58353?
CVE-2024-58353 is a high vulnerability published on July 23, 2026. 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/<id>). Booking question (form field) labels are rendered via React's dangerouslySetInnerHTML without proper input sanitization or CSP,…
When was CVE-2024-58353 disclosed?
CVE-2024-58353 was first published in the National Vulnerability Database on July 23, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-58353 actively exploited?
CVE-2024-58353 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.0% of all scored CVEs.
What is the CVSS score of CVE-2024-58353?
CVE-2024-58353 has a CVSS v4.0 base score of 8.9 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2024-58353?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-58353, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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