CVE-2026-48909

CRITICALPre-NVD 9.59.5—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.5 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 7.6%, top 6% 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: cna:joomla, epss
Trending — 3 sources updated this weekElevated
9.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 9.5Exploit: Elevated riskExposed: 0

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

SP LMS (com_splms) < 4.1.4 by JoomShaper deserializes user-controlled cookie data without validation, enabling an unauthenticated remote attacker to execute arbitrary code on the server.

CVSS v3
9.5
EG Score
9.5(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity95% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
94%
KEV
Not listed

Published

June 20, 2026

Last Modified

June 23, 2026

Advisory Details (1)

Auto-updated Jun 20, 2026
No patch confirmed yet.
generic

Responsive Joomla Templates & Premium Themes Club - JoomShaper

https://www.joomshaper.com/

Vendor Advisories for CVE-2026-48909(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 12× in last 7d / 140× 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 183 total refreshes for this CVE.

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

Publicly available exploits

(4 references)

Working exploit code is in the public domain (2 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCCerberusMrXi/CVE-2026-48909-Joomla-SP-Exploit
    First seen Jul 15, 2026

    CVE-2026-48909 - Unauthenticated PHP Object Injection to RCE exploit for Joomla SP LMS extension versions <= 4.1.3. Exploits lmsOrders cookie deserialization to write webshell via Joomla FormattedtextLogger gadget chain. Includes interactive shell, path discovery, and cleanup. For authorized security testing only.

    Open source ↗
  • Exploit-DBEDB-52617
    First seen Jul 6, 2026

    Joomla Extension 4.1.4 - PHP Object injection

    Open source ↗
  • GitHub PoCIs4yev/CVE-2026-48909
    First seen Jun 21, 2026

    CVE-2026-48909 PoC

    Open source ↗
  • Nucleijavascript/cves/2026/CVE-2026-48909.yaml
    First seen Jan 1, 2026

    Joomla SP LMS <= 4.1.3 - Remote Code Execution

    Open source ↗

Frequently asked(5)

What is CVE-2026-48909?
CVE-2026-48909 is a critical vulnerability published on June 20, 2026. SP LMS (com_splms) < 4.1.4 by JoomShaper deserializes user-controlled cookie data without validation, enabling an unauthenticated remote attacker to execute arbitrary code on the server.
When was CVE-2026-48909 disclosed?
CVE-2026-48909 was first published in the National Vulnerability Database on June 20, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48909 actively exploited?
CVE-2026-48909 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 6.1% of all scored CVEs.
What is the CVSS score of CVE-2026-48909?
CVE-2026-48909 has a CVSS v4.0 base score of 9.5 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-48909?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48909, 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.

Dependency Blast Radius

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