CVE-2026-57827

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-11. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: Elevated riskExposed: 0

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

Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12 - The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Track)
EG Risk 75/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
82%
KEV
Not listed

Published

July 11, 2026

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Aug 26, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

RSFiles! 1.17.12 File Upload RCE Fixed | mySites.guru

https://mysites.guru/blog/rsfiles-unauthenticated-file-upload-rce/
generic🔴 Active Exploitation

Joomla!® File and Download Manager - RSFiles!

https://www.rsjoomla.com/joomla-extensions/joomla-download-manager.html

Vendor Advisories for CVE-2026-57827(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 31× in last 7d / 202× 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 307 total refreshes for this CVE.

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

Publicly available exploits

(3 references)

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

  • GitHub PoCMohammad-008/rsfiles-CVE-2026-57827
    First seen Aug 2, 2026

    Unauthenticated File Upload → RCE PoC for CVE-2026-57827 (RSFiles! Joomla < 1.17.12). Authorized security research use only.

    Open source ↗
  • GitHub PoCshinthink/CVE-2026-57827
    First seen Jul 29, 2026

    CVE-2026-57827 — RSFiles! Joomla Component Unauthenticated File Upload RCE. Split-controller upload bypass. CVSS 9.8 | CWE-434 | com_rsfiles < 1.17.12

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-57827.yaml
    First seen Jan 1, 2026

    RSFiles! for Joomla - Arbitrary File Upload

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57827?
CVE-2026-57827 is a critical vulnerability published on July 11, 2026. Joomla Extension - rsjoomla.com - Unauthenticated file upload in RSFiles component < 1.17.12 - The Joomla extension RSFiles is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
When was CVE-2026-57827 disclosed?
CVE-2026-57827 was first published in the National Vulnerability Database on July 11, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57827 actively exploited?
CVE-2026-57827 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 17.9% of all scored CVEs.
What is the CVSS score of CVE-2026-57827?
CVE-2026-57827 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-57827?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57827, 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

Explore the affected products and dependency analysis for CVE-2026-57827

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