CVE-2018-14630

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 4.4%, top 10% 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
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.

moodle before versions 3.5.2, 3.4.5, 3.3.8, 3.1.14 is vulnerable to an XML import of ddwtos could lead to intentional remote code execution. When importing legacy 'drag and drop into text' (ddwtos) type quiz questions, it was possible to inject and execute PHP code from within the imported questions, either intentionally or by importing questions from an untrusted source.

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
91%
KEV
Not listed

Published

September 17, 2018

Last Modified

November 21, 2024

Advisory Details (5)

Auto-updated Aug 20, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
redhat Patch Available

1629921 – (CVE-2018-14630) CVE-2018-14630 moodle: Moodle XML import of ddwtos could lead to intentional remote code execution (MSA-18-0017)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14630
generic

CVE-2018-14630 - PSIRT.COM

http://www.securityfocus.com/bid/105354
generic

Commit search results · GitHub

http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-62880
generic🟡 PoC Available

Remote Code Execution Via PHP Unserialize In Moodle (Cve-2018-14630) - SEC Consult

https://www.sec-consult.com/en/blog/advisories/remote-code-execution-php-unserialize-moodle-open-source-learning-platform-cve-2018-14630/
generic🟡 PoC Available

Full Disclosure: SEC Consult SA-20180918-0 :: Remote Code Execution via PHP unserialize in Moodle open-source learning platform

https://seclists.org/fulldisclosure/2018/Sep/28

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
moodle/moodlev2.3.10 ... v3.1.9 (133 versions)3.1.14—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 27× 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 152 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2018-14630?
CVE-2018-14630 is a high vulnerability published on September 17, 2018. moodle before versions 3.5.2, 3.4.5, 3.3.8, 3.1.14 is vulnerable to an XML import of ddwtos could lead to intentional remote code execution. When importing legacy 'drag and drop into text' (ddwtos) type quiz questions, it was possible to inject and execute PHP code from within the imported…
When was CVE-2018-14630 disclosed?
CVE-2018-14630 was first published in the National Vulnerability Database on September 17, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-14630 actively exploited?
CVE-2018-14630 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 9.0% of all scored CVEs.
What is the CVSS score of CVE-2018-14630?
CVE-2018-14630 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-14630?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-14630, 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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