CVE-2026-102366

MEDIUMPre-NVD 4.44.4—
EchelonGraph scoreHIGH confidence

Score 4.4 from GitHub Security Advisory (severity: LOW) published 2026-09-29. A secondary CVSS source baseline 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 4.4Exploit: Elevated riskExposed services: Not assessed

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

mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers when accessed from the local storage path, resulting in stored cross-site scripting.

CVSS v3
4.4
EG Score
4.4MEDIUMhigh confidence
EG Risk
36
EG Risk 36/100CISA SSVC

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
Severity44% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 28, 2026

Last Modified

September 30, 2026

Advisory Details (5)

Auto-updated Sep 28, 2026
No patch confirmed yet.
generic

mall4j through 4.0 Unrestricted File Upload in Admin File Endpoints | Advisories | VulnCheck

https://www.vulncheck.com/advisories/mall4j-through-4.0-unrestricted-file-upload-in-admin-file-endpoints
generic

mall4j/yami-shop-service/src/main/java/com/yami/shop/service/impl/AttachFileServiceImpl.java at ffc672fc1aa4320ce02d0b93853bb456ae0a4dae · gz-yami/mall4j · GitHub

https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-service/src/main/java/com/yami/shop/service/impl/AttachFileServiceImpl.java#L62-L81
generic

mall4j/yami-shop-admin/src/main/java/com/yami/shop/admin/controller/FileController.java at ffc672fc1aa4320ce02d0b93853bb456ae0a4dae · gz-yami/mall4j · GitHub

https://github.com/gz-yami/mall4j/blob/ffc672fc1aa4320ce02d0b93853bb456ae0a4dae/yami-shop-admin/src/main/java/com/yami/shop/admin/controller/FileController.java#L44-L64
generic

GitHub - gz-yami/mall4j: ⭐️⭐️⭐️ 电商商城 小程序电商商城系统 PC商城 H5商城 APP商城 Java商城 O2O商城 跨境商城 · GitHub

https://github.com/gz-yami/mall4j
generic

cve-request-poc/mall4j/A03_admin_file_upload_xss.py at 114b3f0d149e50a7678f591bf8043399fc9ac96c · LinYuanyi1/cve-request-poc · GitHub

https://github.com/LinYuanyi1/cve-request-poc/blob/114b3f0d149e50a7678f591bf8043399fc9ac96c/mall4j/A03_admin_file_upload_xss.py

Vendor Advisories for CVE-2026-102366(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 18× in last 7d / 18× 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. 2026-10-03 20:02 UTCGHSA enrichment
  2. 2026-10-02 19:18 UTCEG score recompute
  3. 2026-10-02 19:18 UTCGHSA enrichment
  4. 2026-10-01 19:49 UTCEPSS rescore
  5. 2026-10-01 18:34 UTCGHSA enrichment
  6. 2026-09-30 17:47 UTCEG score recompute
  7. 2026-09-30 17:47 UTCGHSA enrichment
  8. 2026-09-30 15:02 UTCEPSS rescore
  9. 2026-09-30 12:16 UTCEG score recompute
  10. 2026-09-30 12:16 UTCGHSA enrichment
  11. 2026-09-29 15:20 UTCEPSS rescore
  12. 2026-09-29 11:32 UTCEG score recompute
  13. 2026-09-29 11:32 UTCGHSA enrichment
  14. 2026-09-29 10:59 UTCEG score recompute
  15. 2026-09-29 10:59 UTCGHSA enrichment
  16. 2026-09-29 00:19 UTCEG score recompute
  17. 2026-09-28 23:49 UTCEG score recompute
  18. 2026-09-28 23:46 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-102366?
CVE-2026-102366 is a medium vulnerability published on September 28, 2026. mall4j through 4.0 contains an unrestricted file upload vulnerability in FileController endpoints that lack authorization checks and accept arbitrary file types without validation. Attackers with any authenticated token can upload HTML or SVG files that execute scripts in administrator browsers…
When was CVE-2026-102366 disclosed?
CVE-2026-102366 was first published on September 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102366 actively exploited?
CVE-2026-102366 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102366?
CVE-2026-102366 has a CVSS base score of 4.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102366?
No fix for CVE-2026-102366 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-102366 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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