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 — 4 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
27%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 27, 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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 23× 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.

  1. 2026-08-29 17:33 UTCGHSA enrichment
  2. 2026-08-29 05:30 UTCEG score recompute
  3. 2026-08-29 05:29 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 17:33 UTCGHSA enrichment
  6. 2026-08-28 05:33 UTCGHSA enrichment
  7. 2026-08-27 17:37 UTCEG score recompute
  8. 2026-08-27 17:37 UTCGHSA enrichment
  9. 2026-08-27 17:14 UTCEG score recompute
  10. 2026-08-27 17:14 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 14:02 UTCGHSA enrichment
  13. 2026-08-27 02:06 UTCEG score recompute
  14. 2026-08-27 02:06 UTCGHSA enrichment
  15. 2026-08-26 14:46 UTCEPSS rescore
  16. 2026-08-26 14:11 UTCGHSA enrichment
  17. 2026-08-26 02:11 UTCGHSA enrichment
  18. 2026-08-25 14:16 UTCEG score recompute
  19. 2026-08-25 14:15 UTCGHSA enrichment
  20. 2026-08-25 13:49 UTCEPSS rescore
  21. 2026-08-25 02:19 UTCEG score recompute
  22. 2026-08-25 01:50 UTCEG score recompute
  23. 2026-08-25 01:50 UTCMITRE cvelistV5first tracked

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 August 27, 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 73.1% 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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