CVE-2024-45046

MEDIUMNVD 5.45.4
EchelonGraph scoreLOW confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). 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: nvd
Elevated
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

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

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions \PhpOffice\PhpSpreadsheet\Writer\Html doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker may used a crafted spreadsheet to fully takeover a session of a user viewing spreadsheet files as HTML. This issue has been addressed in release version 2.1.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS v3
5.4
EG Score
5.4(low)
EG Risk
—
EPSS
32.0%
KEV
Not listed

Published

August 28, 2024

Last Modified

September 4, 2024

References (3)

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
phpoffice/phpexcel1.7.9 ... 1.8.2 (9 versions)——
phpoffice/phpspreadsheet1.0.0 ... 1.9.0 (46 versions)1.29.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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. 2026-07-22 14:07 UTCEPSS rescore
  2. 2026-07-21 15:23 UTCEPSS rescore
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  4. 2026-07-20 17:06 UTCEPSS rescore
  5. 2026-07-19 02:28 UTCEPSS rescore
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  7. 2026-07-18 10:03 UTCEPSS rescore
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  14. 2026-07-13 22:29 UTCEPSS rescore
  15. 2026-07-13 09:38 UTCOSV refresh
  16. 2026-07-13 06:12 UTCEPSS rescore
  17. 2026-07-12 05:45 UTCEPSS rescore
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  1. 2026-07-06 02:22 UTCEPSS rescore
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  3. 2026-07-01 15:05 UTCEPSS rescore
  4. 2026-06-30 23:21 UTCEPSS rescore
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  6. 2026-06-29 14:05 UTCEPSS rescore
  7. 2026-06-28 14:07 UTCEPSS rescore
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  9. 2026-06-28 04:55 UTCEPSS rescore
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  11. 2026-06-27 03:07 UTCEPSS rescore
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  13. 2026-06-25 13:49 UTCEPSS rescore
  14. 2026-06-25 01:31 UTCOSV refresh
  15. 2026-06-24 14:04 UTCEPSS rescore
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  17. 2026-06-23 21:32 UTCEPSS rescore
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  19. 2026-06-22 14:25 UTCEPSS rescore
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  21. 2026-06-21 14:55 UTCEPSS rescore
  22. 2026-06-21 01:58 UTCEPSS rescore
  23. 2026-06-21 01:58 UTCEPSS rescore
  24. 2026-06-19 19:25 UTCEPSS rescore
  25. 2026-06-19 19:25 UTCEPSS rescore
  26. 2026-06-18 17:52 UTCEPSS rescore
  27. 2026-06-18 17:52 UTCEPSS rescore
  28. 2026-06-17 17:52 UTCEPSS rescore
  29. 2026-06-16 17:52 UTCEPSS rescore
  30. 2026-06-16 17:52 UTCEPSS rescore
  31. 2026-06-15 17:47 UTCEPSS rescore
  32. 2026-06-14 23:17 UTCEPSS rescore
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  36. 2026-06-12 23:11 UTCEPSS rescore
  37. 2026-06-12 23:11 UTCEPSS rescore
  38. 2026-06-11 13:59 UTCEPSS rescore
  39. 2026-06-10 22:18 UTCEPSS rescore
  40. 2026-06-10 13:21 UTCEPSS rescore
  41. 2026-06-08 14:16 UTCEPSS rescore
  42. 2026-06-08 14:16 UTCEPSS rescore
  43. 2026-06-07 22:55 UTCOSV refresh
  44. 2026-06-07 15:24 UTCEPSS rescore
  45. 2026-06-07 15:24 UTCEPSS rescore
  46. 2026-06-06 13:46 UTCEPSS rescore
  47. 2026-06-06 13:46 UTCEPSS rescore
  48. 2026-06-05 22:46 UTCEPSS rescore
  49. 2026-06-05 22:46 UTCEPSS rescore
  50. 2026-06-05 06:09 UTCEPSS rescore
  51. 2026-06-05 06:09 UTCEPSS rescore
  52. 2026-06-04 13:11 UTCEPSS rescore
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  54. 2026-06-02 20:12 UTCEPSS rescore
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  56. 2026-06-01 13:51 UTCEPSS rescore
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  58. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-31 00:16 UTCEPSS rescore
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  62. 2026-05-29 13:43 UTCEPSS rescore
  63. 2026-05-28 13:44 UTCEPSS rescore
  64. 2026-05-28 13:44 UTCEPSS rescore
  65. 2026-05-27 13:40 UTCEPSS rescore
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  67. 2026-05-26 13:43 UTCEPSS rescore
  68. 2026-05-26 13:43 UTCEPSS rescore
  69. 2026-05-26 07:18 UTCEPSS rescore
  70. 2026-05-26 07:18 UTCEPSS rescore
  71. 2026-05-26 07:18 UTCEPSS rescore
  72. 2026-05-23 11:52 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2024-45046?
CVE-2024-45046 is a medium vulnerability published on August 28, 2024. PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In affected versions \PhpOffice\PhpSpreadsheet\Writer\Html doesn't sanitize spreadsheet styling information such as font names, allowing an attacker to inject arbitrary JavaScript on the page. As a result an attacker…
When was CVE-2024-45046 disclosed?
CVE-2024-45046 was first published in the National Vulnerability Database on August 28, 2024, with the most recent update on September 4, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-45046 actively exploited?
CVE-2024-45046 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2024-45046?
CVE-2024-45046 has a CVSS v3 base score of 5.4 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2024-45046?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-45046, 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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