CVE-2026-56702

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

Adminer versions before 5.4.3 contain an unrestricted file upload vulnerability in the AdminerFileUpload plugin that allows authenticated users to upload PHP files by exploiting a permissive default extension allowlist. Attackers can upload PHP webshells to columns ending in _path and execute arbitrary code as the web-server user when uploadPath is web-served.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 25, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Adminer before 5.4.3 Unrestricted File Upload via AdminerFileUpload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/adminer-before-unrestricted-file-upload-via-adminerfileupload
github Patch Available🟡 PoC Available

AdminerFileUpload Allows PHP File Upload Leading to RCE · Advisory · vrana/adminer · GitHub

https://github.com/vrana/adminer/security/advisories/GHSA-vcvj-rwwm-x6g5

Vendor Advisories for CVE-2026-56702(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
adminer4.8.1-1 ... 6.0.1-1 (13 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
adminer5.2.1+dfsg-1 ... 6.0.1-1 (9 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
adminer5.2.1+dfsg-1, 5.3.0+dfsg-1, 5.4.0+dfsg-1, 5.4.1+dfsg-1, 5.4.2+dfsg-15.4.3+dfsg-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 109× 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 109 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56702?
CVE-2026-56702 is a high vulnerability published on August 25, 2026. Adminer versions before 5.4.3 contain an unrestricted file upload vulnerability in the AdminerFileUpload plugin that allows authenticated users to upload PHP files by exploiting a permissive default extension allowlist. Attackers can upload PHP webshells to columns ending in _path and execute…
When was CVE-2026-56702 disclosed?
CVE-2026-56702 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56702 actively exploited?
CVE-2026-56702 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 72.1% of all scored CVEs.
What is the CVSS score of CVE-2026-56702?
CVE-2026-56702 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-56702?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56702, 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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