CVE-2024-58355

HIGHPre-NVD 8.98.9—
EchelonGraph scoreMEDIUM confidence

Score 8.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-24. a secondary CVSS source baseline 8.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 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 (calcom/cal.diy) versions through 4.7.15 contain a stored cross-site scripting vulnerability. The single booking view (e.g., https://app.cal.com/booking/) renders booking-question field labels via React's dangerouslySetInnerHTML without sanitizing or escaping user input. An attacker who can create an event type with a malicious booking-question label can inject arbitrary HTML/JavaScript that executes when a victim opens the crafted booking URL. The issue is fixed in v4.7.16.

CVSS v3
8.9
EG Score
8.9(medium)
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: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 30, 2026

Advisory Details (3)

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

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-2
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-2024-58355(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 22× in last 7d / 91× 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.

Showing the most recent 100 of 179 total refreshes for this CVE.

  1. 2026-09-15 09:48 UTCEG score recompute
  2. 2026-09-15 09:48 UTCGHSA enrichment
  3. 2026-09-15 03:08 UTCEPSS rescore
  4. 2026-09-14 16:12 UTCGHSA enrichment
  5. 2026-09-14 02:38 UTCEG score recompute
  6. 2026-09-14 02:38 UTCGHSA enrichment
  7. 2026-09-13 16:45 UTCEPSS rescore
  8. 2026-09-13 13:24 UTCGHSA enrichment
  9. 2026-09-13 00:12 UTCEG score recompute
  10. 2026-09-13 00:12 UTCGHSA enrichment
  11. 2026-09-12 14:59 UTCEPSS rescore
  12. 2026-09-12 09:42 UTCGHSA enrichment
  13. 2026-09-11 20:27 UTCEG score recompute
  14. 2026-09-11 20:27 UTCGHSA enrichment
  15. 2026-09-11 14:51 UTCEPSS rescore
  16. 2026-09-11 09:35 UTCEPSS rescore
  17. 2026-09-11 07:14 UTCGHSA enrichment
  18. 2026-09-10 15:05 UTCEG score recompute
  19. 2026-09-10 15:05 UTCGHSA enrichment
  20. 2026-09-10 09:33 UTCEPSS rescore
  21. 2026-09-09 08:53 UTCEG score recompute
  22. 2026-09-09 08:53 UTCGHSA enrichment
  23. 2026-09-08 21:59 UTCEPSS rescore
  24. 2026-09-07 21:28 UTCEG score recompute
  25. 2026-09-07 21:28 UTCGHSA enrichment
Show 75 more
  1. 2026-09-07 16:00 UTCEPSS rescore
  2. 2026-09-06 13:46 UTCEPSS rescore
  3. 2026-09-06 09:27 UTCGHSA enrichment
  4. 2026-09-05 20:09 UTCEG score recompute
  5. 2026-09-05 20:09 UTCGHSA enrichment
  6. 2026-09-05 06:57 UTCEG score recompute
  7. 2026-09-05 06:57 UTCGHSA enrichment
  8. 2026-09-04 13:59 UTCEPSS rescore
  9. 2026-09-04 12:58 UTCEG score recompute
  10. 2026-09-04 12:58 UTCGHSA enrichment
  11. 2026-09-04 05:05 UTCEPSS rescore
  12. 2026-09-02 14:10 UTCEPSS rescore
  13. 2026-09-01 23:20 UTCEG score recompute
  14. 2026-09-01 23:20 UTCGHSA enrichment
  15. 2026-09-01 13:52 UTCEPSS rescore
  16. 2026-08-31 02:54 UTCEG score recompute
  17. 2026-08-31 02:54 UTCGHSA enrichment
  18. 2026-08-30 19:16 UTCEPSS rescore
  19. 2026-08-30 19:16 UTCEPSS rescore
  20. 2026-08-30 13:41 UTCEG score recompute
  21. 2026-08-30 13:41 UTCGHSA enrichment
  22. 2026-08-30 01:21 UTCEPSS rescore
  23. 2026-08-30 00:28 UTCEG score recompute
  24. 2026-08-30 00:28 UTCGHSA enrichment
  25. 2026-08-28 21:39 UTCEPSS rescore
  26. 2026-08-27 23:21 UTCEG score recompute
  27. 2026-08-27 23:21 UTCGHSA enrichment
  28. 2026-08-27 14:24 UTCEPSS rescore
  29. 2026-08-27 10:09 UTCGHSA enrichment
  30. 2026-08-26 19:54 UTCEG score recompute
  31. 2026-08-26 19:54 UTCGHSA enrichment
  32. 2026-08-26 14:44 UTCEPSS rescore
  33. 2026-08-26 03:23 UTCGHSA enrichment
  34. 2026-08-25 13:53 UTCEG score recompute
  35. 2026-08-25 13:53 UTCGHSA enrichment
  36. 2026-08-25 13:47 UTCEPSS rescore
  37. 2026-08-25 00:41 UTCEG score recompute
  38. 2026-08-25 00:41 UTCGHSA enrichment
  39. 2026-08-24 14:15 UTCEPSS rescore
  40. 2026-08-24 11:26 UTCEG score recompute
  41. 2026-08-24 11:26 UTCGHSA enrichment
  42. 2026-08-23 22:14 UTCGHSA enrichment
  43. 2026-08-23 09:00 UTCEG score recompute
  44. 2026-08-23 09:00 UTCGHSA enrichment
  45. 2026-08-23 00:18 UTCEPSS rescore
  46. 2026-08-22 19:48 UTCGHSA enrichment
  47. 2026-08-22 06:35 UTCEG score recompute
  48. 2026-08-22 06:35 UTCGHSA enrichment
  49. 2026-08-21 23:47 UTCEPSS rescore
  50. 2026-08-21 17:22 UTCGHSA enrichment
  51. 2026-08-21 04:10 UTCEG score recompute
  52. 2026-08-21 04:10 UTCGHSA enrichment
  53. 2026-08-20 22:54 UTCEPSS rescore
  54. 2026-08-20 14:57 UTCGHSA enrichment
  55. 2026-08-20 01:43 UTCEG score recompute
  56. 2026-08-20 01:43 UTCGHSA enrichment
  57. 2026-08-19 17:02 UTCEPSS rescore
  58. 2026-08-19 12:29 UTCGHSA enrichment
  59. 2026-08-18 23:16 UTCEG score recompute
  60. 2026-08-18 23:16 UTCGHSA enrichment
  61. 2026-08-18 13:47 UTCEPSS rescore
  62. 2026-08-18 10:01 UTCGHSA enrichment
  63. 2026-08-17 20:48 UTCEG score recompute
  64. 2026-08-17 20:48 UTCGHSA enrichment
  65. 2026-08-17 13:45 UTCEPSS rescore
  66. 2026-08-17 07:35 UTCGHSA enrichment
  67. 2026-08-16 18:23 UTCEG score recompute
  68. 2026-08-16 18:23 UTCGHSA enrichment
  69. 2026-08-16 14:55 UTCEPSS rescore
  70. 2026-08-16 05:10 UTCEG score recompute
  71. 2026-08-16 05:10 UTCGHSA enrichment
  72. 2026-08-16 02:13 UTCEPSS rescore
  73. 2026-08-15 15:57 UTCGHSA enrichment
  74. 2026-08-15 02:45 UTCEG score recompute
  75. 2026-08-15 02:45 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2024-58355?
CVE-2024-58355 is a high vulnerability published on July 23, 2026. Cal.com (calcom/cal.diy) versions through 4.7.15 contain a stored cross-site scripting vulnerability. The single booking view (e.g., https://app.cal.com/booking/<id>) renders booking-question field labels via React's dangerouslySetInnerHTML without sanitizing or escaping user input. An attacker who…
When was CVE-2024-58355 disclosed?
CVE-2024-58355 was first published in the National Vulnerability Database on July 23, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-58355 actively exploited?
CVE-2024-58355 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 64.9% of all scored CVEs.
What is the CVSS score of CVE-2024-58355?
CVE-2024-58355 has a CVSS v3 base score of 8.9 (NVD).
How do I remediate CVE-2024-58355?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-58355, 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.

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