CVE-2024-5521

MEDIUMNVD 6.46.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.4 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 82% 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
6.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.4Exploit: None knownExposed: 0

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

Two Cross-Site Scripting vulnerabilities have been discovered in Alkacon's OpenCMS affecting version 16, which could allow a user having the roles of gallery editor or VFS resource manager will have the permission to upload images in the .svg format containing JavaScript code. The code will be executed the moment another user accesses the image.

CVSS v3
6.4
EG Score
6.4(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity64% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

May 30, 2024

Last Modified

April 10, 2025

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 37× 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 117 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2024-5521?
CVE-2024-5521 is a medium vulnerability published on May 30, 2024. Two Cross-Site Scripting vulnerabilities have been discovered in Alkacon's OpenCMS affecting version 16, which could allow a user having the roles of gallery editor or VFS resource manager will have the permission to upload images in the .svg format containing JavaScript code. The code will be…
When was CVE-2024-5521 disclosed?
CVE-2024-5521 was first published in the National Vulnerability Database on May 30, 2024, with the most recent update on April 10, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-5521 actively exploited?
CVE-2024-5521 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 82.4% of all scored CVEs.
What is the CVSS score of CVE-2024-5521?
CVE-2024-5521 has a CVSS v3 base score of 6.4 (NVD).
How do I remediate CVE-2024-5521?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-5521, 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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