CVE-2024-35218

MEDIUMNVD 4.24.2—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.2 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 73% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
4.2
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.2Exploit: NoneExposed: 0

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

Umbraco CMS is an ASP.NET CMS used by more than 730.000 websites. Stored Cross-site scripting (XSS) enable attackers that have access to backoffice to bring malicious content into a website or application. This vulnerability has been patched in version(s) 8.18.13, 10.8.4, 12.3.7, 13.1.1 by implementing IHtmlSanitizer.

CVSS v3
4.2
EG Score
4.2(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity42% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
27.5%
KEV
Not listed

Published

May 21, 2024

Last Modified

February 12, 2025

References (10)

Affected Packages

(1 across 1 ecosystem)
NuGet(1)
PackageVulnerable rangeFixed inDependents
UmbracoCms.Core—13.1.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 49× 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 102 total refreshes for this CVE.

  1. 2026-07-23 14:17 UTCEPSS rescore
  2. 2026-07-23 14:17 UTCEPSS rescore
  3. 2026-07-23 02:37 UTCEG score recompute
  4. 2026-07-22 14:07 UTCEPSS rescore
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  17. 2026-07-15 01:59 UTCEPSS rescore
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  19. 2026-07-14 09:55 UTCOSV refresh
  20. 2026-07-13 22:29 UTCEPSS rescore
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  1. 2026-07-08 15:14 UTCEPSS rescore
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  17. 2026-06-27 03:07 UTCEPSS rescore
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  19. 2026-06-26 10:37 UTCOSV refresh
  20. 2026-06-25 13:49 UTCEPSS rescore
  21. 2026-06-24 14:04 UTCEPSS rescore
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  23. 2026-06-23 21:32 UTCEPSS rescore
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  25. 2026-06-22 14:25 UTCEPSS rescore
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  27. 2026-06-21 14:55 UTCEPSS rescore
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  29. 2026-06-21 01:58 UTCEPSS rescore
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  31. 2026-06-19 19:25 UTCEPSS rescore
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  40. 2026-06-13 22:59 UTCEPSS rescore
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  42. 2026-06-12 23:11 UTCEPSS rescore
  43. 2026-06-11 13:59 UTCEPSS rescore
  44. 2026-06-10 22:17 UTCEPSS rescore
  45. 2026-06-10 13:21 UTCEPSS rescore
  46. 2026-06-08 17:11 UTCOSV refresh
  47. 2026-06-08 14:16 UTCEPSS rescore
  48. 2026-06-07 15:24 UTCEPSS rescore
  49. 2026-06-07 15:24 UTCEPSS rescore
  50. 2026-06-06 13:46 UTCEPSS rescore
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  54. 2026-06-05 06:09 UTCEPSS rescore
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  56. 2026-06-04 13:11 UTCEPSS rescore
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  65. 2026-05-29 13:43 UTCEPSS rescore
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  74. 2026-05-26 07:18 UTCEPSS rescore
  75. 2026-05-26 07:18 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-35218?
CVE-2024-35218 is a medium vulnerability published on May 21, 2024. Umbraco CMS is an ASP.NET CMS used by more than 730.000 websites. Stored Cross-site scripting (XSS) enable attackers that have access to backoffice to bring malicious content into a website or application. This vulnerability has been patched in version(s) 8.18.13, 10.8.4, 12.3.7, 13.1.1 by…
When was CVE-2024-35218 disclosed?
CVE-2024-35218 was first published in the National Vulnerability Database on May 21, 2024, with the most recent update on February 12, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-35218 actively exploited?
CVE-2024-35218 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 27.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-35218?
CVE-2024-35218 has a CVSS v3 base score of 4.2 (NVD).
How do I remediate CVE-2024-35218?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-35218, 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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