CVE-2023-4221

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 3.5%, top 12% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 8.8Exploit: None knownExposed: 0

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

Command injection in main/lp/openoffice_presentation.class.php in Chamilo LMS <= v1.11.24 allows users permitted to upload Learning Paths to obtain remote code execution via improper neutralisation of special characters.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
46(Track)
EG Risk 46/100SSVC: 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
Severity88% × 45%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
89%
KEV
Not listed

Published

November 28, 2023

Last Modified

June 17, 2026

Advisory Details (3)

Auto-updated Aug 4, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic🟡 PoC Available

(CVE-2023-4221) Chamilo LMS Learning Path PPT2LP OpenofficePresentation Command Injection | STAR Labs

https://starlabs.sg/advisories/23/23-4221
github_commit

commit ed72914608d2 (chamilo/chamilo-lms)

Fix landed in chamilo/chamilo-lms commit ed72914608d2 — awaiting tagged release

https://github.com/chamilo/chamilo-lms/commit/ed72914608d2a07ee2eb587c1a654480d08201db
github_commit

commit 841a07396fed (chamilo/chamilo-lms)

Fix landed in chamilo/chamilo-lms commit 841a07396fed — awaiting tagged release

https://github.com/chamilo/chamilo-lms/commit/841a07396fed0ef27c5db13a1b700eac02754fc7

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 31× 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 176 total refreshes for this CVE.

  1. 2026-09-24 14:01 UTCEPSS rescore
  2. 2026-09-24 14:01 UTCEPSS rescore
  3. 2026-09-23 13:46 UTCEPSS rescore
  4. 2026-09-22 15:22 UTCOSV refresh
  5. 2026-09-22 14:46 UTCEPSS rescore
  6. 2026-09-21 20:31 UTCEPSS rescore
  7. 2026-09-18 19:26 UTCEPSS rescore
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  9. 2026-09-16 14:06 UTCEPSS rescore
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  11. 2026-09-15 03:08 UTCEPSS rescore
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  15. 2026-09-08 21:58 UTCEPSS rescore
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  17. 2026-09-06 13:46 UTCEPSS rescore
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  19. 2026-09-05 15:26 UTCEPSS rescore
  20. 2026-09-04 13:58 UTCEPSS rescore
  21. 2026-09-04 05:04 UTCEPSS rescore
  22. 2026-09-03 12:29 UTCOSV refresh
  23. 2026-09-02 14:10 UTCEPSS rescore
  24. 2026-09-02 14:09 UTCEPSS rescore
  25. 2026-09-01 13:51 UTCEPSS rescore
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  1. 2026-09-01 04:35 UTCEPSS rescore
  2. 2026-08-30 19:15 UTCEPSS rescore
  3. 2026-08-30 01:20 UTCEPSS rescore
  4. 2026-08-28 21:39 UTCEPSS rescore
  5. 2026-08-27 14:23 UTCEPSS rescore
  6. 2026-08-26 14:44 UTCEPSS rescore
  7. 2026-08-25 13:46 UTCEPSS rescore
  8. 2026-08-24 14:14 UTCEPSS rescore
  9. 2026-08-23 00:17 UTCEPSS rescore
  10. 2026-08-21 23:47 UTCEPSS rescore
  11. 2026-08-20 22:53 UTCEPSS rescore
  12. 2026-08-19 17:02 UTCEPSS rescore
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  14. 2026-08-18 13:46 UTCEPSS rescore
  15. 2026-08-17 13:45 UTCEPSS rescore
  16. 2026-08-17 01:48 UTCOSV refresh
  17. 2026-08-16 14:54 UTCEPSS rescore
  18. 2026-08-16 02:12 UTCEPSS rescore
  19. 2026-08-15 01:28 UTCEPSS rescore
  20. 2026-08-13 21:58 UTCEPSS rescore
  21. 2026-08-12 13:49 UTCEPSS rescore
  22. 2026-08-11 13:40 UTCEPSS rescore
  23. 2026-08-10 23:57 UTCEPSS rescore
  24. 2026-08-09 13:44 UTCEPSS rescore
  25. 2026-08-09 13:44 UTCEPSS rescore
  26. 2026-08-08 16:35 UTCEPSS rescore
  27. 2026-08-07 16:25 UTCEPSS rescore
  28. 2026-08-06 13:45 UTCEPSS rescore
  29. 2026-08-05 19:15 UTCEPSS rescore
  30. 2026-08-04 15:07 UTCEPSS rescore
  31. 2026-08-04 10:35 UTCEPSS rescore
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  34. 2026-08-02 02:25 UTCEPSS rescore
  35. 2026-08-02 02:25 UTCEPSS rescore
  36. 2026-08-01 20:06 UTCOSV refresh
  37. 2026-08-01 04:14 UTCEPSS rescore
  38. 2026-07-30 16:26 UTCEPSS rescore
  39. 2026-07-30 16:26 UTCEPSS rescore
  40. 2026-07-30 01:28 UTCEPSS rescore
  41. 2026-07-28 15:34 UTCEPSS rescore
  42. 2026-07-28 15:34 UTCEPSS rescore
  43. 2026-07-27 14:10 UTCEPSS rescore
  44. 2026-07-26 14:52 UTCEPSS rescore
  45. 2026-07-25 14:16 UTCEPSS rescore
  46. 2026-07-24 14:16 UTCEPSS rescore
  47. 2026-07-24 14:16 UTCEPSS rescore
  48. 2026-07-23 14:16 UTCEPSS rescore
  49. 2026-07-23 02:26 UTCEG score recompute
  50. 2026-07-22 23:13 UTCEG score recompute▲ 1.60
  51. 2026-07-22 14:06 UTCEPSS rescore
  52. 2026-07-21 15:23 UTCEPSS rescore
  53. 2026-07-21 15:23 UTCEPSS rescore
  54. 2026-07-20 17:06 UTCEPSS rescore
  55. 2026-07-19 14:29 UTCEPSS rescore
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  57. 2026-07-19 02:27 UTCEPSS rescore
  58. 2026-07-18 10:03 UTCEPSS rescore
  59. 2026-07-18 10:03 UTCEPSS rescore
  60. 2026-07-16 17:01 UTCEPSS rescore
  61. 2026-07-15 16:56 UTCEPSS rescore
  62. 2026-07-15 16:56 UTCEPSS rescore
  63. 2026-07-15 02:49 UTCOSV refresh
  64. 2026-07-15 01:59 UTCEPSS rescore
  65. 2026-07-15 01:59 UTCEPSS rescore
  66. 2026-07-13 22:28 UTCEPSS rescore
  67. 2026-07-13 22:28 UTCEPSS rescore
  68. 2026-07-13 06:11 UTCEPSS rescore
  69. 2026-07-13 06:11 UTCEPSS rescore
  70. 2026-07-12 05:45 UTCEPSS rescore
  71. 2026-07-11 08:26 UTCEPSS rescore
  72. 2026-07-09 19:08 UTCEPSS rescore
  73. 2026-07-08 15:13 UTCEPSS rescore
  74. 2026-07-06 16:26 UTCEPSS rescore
  75. 2026-07-06 16:26 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2023-4221?
CVE-2023-4221 is a high vulnerability published on November 28, 2023. Command injection in main/lp/openoffice_presentation.class.php in Chamilo LMS <= v1.11.24 allows users permitted to upload Learning Paths to obtain remote code execution via improper neutralisation of special characters.
When was CVE-2023-4221 disclosed?
CVE-2023-4221 was first published in the National Vulnerability Database on November 28, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-4221 actively exploited?
CVE-2023-4221 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 11.2% of all scored CVEs.
What is the CVSS score of CVE-2023-4221?
CVE-2023-4221 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-4221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-4221, 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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