CVE-2017-20267

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-06-19. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

Joomla! Component Calendar Planner 1.0.1 contains an SQL injection vulnerability that allows unauthenticated attackers to inject SQL commands through the category_id parameter. Attackers can send GET requests to the events view with malicious SQL code in the category_id parameter to extract sensitive database information.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
35%
KEV
Not listed

Published

June 19, 2026

Last Modified

August 19, 2026

Advisory Details (4)

Auto-updated Jun 19, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

Joomla! Component Calendar Planner 1.0.1 SQL Injection | Advisories | VulnCheck

https://www.vulncheck.com/advisories/joomla-component-calendar-planner-sql-injection
generic🟡 PoC Available

Joomla! Component Calendar Planner 1.0.1 - SQL Injection - PHP webapps Exploit

https://www.exploit-db.com/exploits/42501
generic

Calendar Planner, by JoomlaThat! - Joomla Extension Directory

https://extensions.joomla.org/extensions/extension/calendars-a-events/events/calendar-planner/
generic

JoomlaThat! - Professional Joomla! Extensions and Services

http://joomlathat.com/

Vendor Advisories for CVE-2017-20267(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 4× in last 7d / 56× 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 215 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-20267?
CVE-2017-20267 is a high vulnerability published on June 19, 2026. Joomla! Component Calendar Planner 1.0.1 contains an SQL injection vulnerability that allows unauthenticated attackers to inject SQL commands through the categoryid parameter. Attackers can send GET requests to the events view with malicious SQL code in the categoryid parameter to extract sensitive…
When was CVE-2017-20267 disclosed?
CVE-2017-20267 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-20267 actively exploited?
CVE-2017-20267 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 65.2% of all scored CVEs.
What is the CVSS score of CVE-2017-20267?
CVE-2017-20267 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2017-20267?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-20267, 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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