CVE-2026-19852

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-08-24. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

NewSiteServer (NSS) developed by CyberTutor has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload arbitrary files, including malicious HTML files, thereby achieving effects similar to cross-site scripting.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

August 24, 2026

Last Modified

August 26, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
No patch confirmed yet. Sources: cert.
cert

CyberTutor｜NewSiteServer (NSS) - Arbitrary File Upload-TWCERT/CC Taiwan Computer Emergency Response Team/Coordination Center

https://www.twcert.org.tw/en/cp-139-11120-64c52-2.html
cert

網韻資訊｜NewSiteServer (NSS)新式校園網站系統 - Arbitrary File Upload-TWCERT/CC台灣電腦網路危機處理暨協調中心|企業資安通報協處|資安情資分享|漏洞通報|資安聯盟|資安電子報

https://www.twcert.org.tw/tw/cp-132-11116-2c1d8-1.html

Vendor Advisories for CVE-2026-19852(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 20× in last 7d / 20× 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 17:50 UTCEG score recompute
  2. 2026-08-29 17:49 UTCGHSA enrichment
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-28 18:02 UTCGHSA enrichment
  5. 2026-08-27 18:16 UTCEG score recompute
  6. 2026-08-27 18:16 UTCGHSA enrichment
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 17:00 UTCEG score recompute
  9. 2026-08-26 17:00 UTCGHSA enrichment
  10. 2026-08-26 14:46 UTCEPSS rescore
  11. 2026-08-25 17:03 UTCEG score recompute
  12. 2026-08-25 17:03 UTCGHSA enrichment
  13. 2026-08-25 13:48 UTCEPSS rescore
  14. 2026-08-24 17:19 UTCEG score recompute
  15. 2026-08-24 17:19 UTCGHSA enrichment
  16. 2026-08-24 16:52 UTCEG score recompute
  17. 2026-08-24 16:52 UTCGHSA enrichment
  18. 2026-08-24 04:23 UTCEG score recompute
  19. 2026-08-24 03:51 UTCEG score recompute
  20. 2026-08-24 03:50 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19852?
CVE-2026-19852 is a medium vulnerability published on August 24, 2026. NewSiteServer (NSS) developed by CyberTutor has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload arbitrary files, including malicious HTML files, thereby achieving effects similar to cross-site scripting.
When was CVE-2026-19852 disclosed?
CVE-2026-19852 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19852 actively exploited?
CVE-2026-19852 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 85.8% of all scored CVEs.
What is the CVSS score of CVE-2026-19852?
CVE-2026-19852 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-19852?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19852, 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-2026-19852

Explore →

Is Your Infrastructure Affected by CVE-2026-19852?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs