CVE-2026-75331

MEDIUMPre-NVD 4.64.6—
EchelonGraph scoreHIGH confidence

Score 4.6 from GitHub Security Advisory published 2026-08-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this weekElevated
4.6EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.6Exploit: Elevated riskExposed: 0

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

tamguo 1.5.3 is vulnerable to Unrestricted File Upload Leading to Stored XSS. The /uploadFile and /imgUpload endpoints in FileUploadController.java and UEditorController.java have no file type validation. Attackers can upload arbitrary HTML/JavaScript files to the server.

CVSS v3
4.6
EG Score
4.6(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity46% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 27, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
No patch confirmed yet.
generic

CVE/tamgou/xss.md at main · fangtang7/CVE · GitHub

https://github.com/fangtang7/CVE/blob/main/tamgou/xss.md

Vendor Advisories for CVE-2026-75331(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 14× in last 7d / 14× 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 14:05 UTCEG score recompute
  2. 2026-08-29 14:05 UTCGHSA enrichment
  3. 2026-08-28 21:42 UTCEPSS rescore
  4. 2026-08-28 16:06 UTCEG score recompute
  5. 2026-08-28 16:06 UTCGHSA enrichment
  6. 2026-08-27 17:32 UTCEG score recompute
  7. 2026-08-27 17:32 UTCGHSA enrichment
  8. 2026-08-27 16:52 UTCEG score recompute▲ 4.60
  9. 2026-08-27 16:52 UTCGHSA enrichment
  10. 2026-08-27 16:43 UTCMITRE cvelistV5CVSS v3 → 4.6 · severity → MEDIUM
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-26 22:24 UTCNVD update
  13. 2026-08-26 22:03 UTCEG score recompute
  14. 2026-08-26 22:01 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-75331?
CVE-2026-75331 is a medium vulnerability published on August 26, 2026. tamguo 1.5.3 is vulnerable to Unrestricted File Upload Leading to Stored XSS. The /uploadFile and /imgUpload endpoints in FileUploadController.java and UEditorController.java have no file type validation. Attackers can upload arbitrary HTML/JavaScript files to the server.
When was CVE-2026-75331 disclosed?
CVE-2026-75331 was first published in the National Vulnerability Database on August 26, 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-2026-75331 actively exploited?
CVE-2026-75331 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 96.9% of all scored CVEs.
What is the CVSS score of CVE-2026-75331?
CVE-2026-75331 has a CVSS v3.1 base score of 4.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-75331?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-75331, 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-2026-75331

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