CVE-2026-26339

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-02-19. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve remote code execution through the argument injection vulnerability, which exists in the document processing functionality.

CVSS v3
9.8
EG Score
9.8(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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

February 19, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

Hyland Alfresco Transformation Service Argument Injection RCE | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hyland-alfresco-transformation-service-argument-injection-rce
generic

Alfresco | Open Source Content, Process & Governance Management| Hyland | Hyland

https://www.hyland.com/en/solutions/products/alfresco-platform

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 28× 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 112 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-26339?
CVE-2026-26339 is a critical vulnerability published on February 19, 2026. Hyland Alfresco Transformation Service allows unauthenticated attackers to achieve remote code execution through the argument injection vulnerability, which exists in the document processing functionality.
When was CVE-2026-26339 disclosed?
CVE-2026-26339 was first published in the National Vulnerability Database on February 19, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-26339 actively exploited?
CVE-2026-26339 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.3% of all scored CVEs.
What is the CVSS score of CVE-2026-26339?
CVE-2026-26339 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-26339?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-26339, 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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