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 — 3 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
15%
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 16× in last 7d / 77× 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. 2026-09-20 23:27 UTCEG score recompute
  2. 2026-09-20 23:27 UTCGHSA enrichment
  3. 2026-09-19 23:31 UTCEG score recompute
  4. 2026-09-19 23:31 UTCGHSA enrichment
  5. 2026-09-18 23:48 UTCEG score recompute
  6. 2026-09-18 23:48 UTCGHSA enrichment
  7. 2026-09-18 19:27 UTCEPSS rescore
  8. 2026-09-18 00:06 UTCEG score recompute
  9. 2026-09-18 00:06 UTCGHSA enrichment
  10. 2026-09-16 23:20 UTCEG score recompute
  11. 2026-09-16 23:20 UTCGHSA enrichment
  12. 2026-09-16 14:07 UTCEPSS rescore
  13. 2026-09-16 05:14 UTCEPSS rescore
  14. 2026-09-15 23:37 UTCEG score recompute
  15. 2026-09-15 23:37 UTCGHSA enrichment
  16. 2026-09-14 23:53 UTCGHSA enrichment
  17. 2026-09-14 00:10 UTCEG score recompute
  18. 2026-09-14 00:10 UTCGHSA enrichment
  19. 2026-09-13 16:46 UTCEPSS rescore
  20. 2026-09-13 00:26 UTCEG score recompute
  21. 2026-09-13 00:26 UTCGHSA enrichment
  22. 2026-09-12 15:00 UTCEPSS rescore
  23. 2026-09-12 00:43 UTCEG score recompute
  24. 2026-09-12 00:43 UTCGHSA enrichment
  25. 2026-09-11 14:52 UTCEPSS rescore
Show 52 more
  1. 2026-09-11 09:36 UTCEPSS rescore
  2. 2026-09-11 01:00 UTCEG score recompute
  3. 2026-09-11 01:00 UTCGHSA enrichment
  4. 2026-09-10 09:34 UTCEPSS rescore
  5. 2026-09-10 01:17 UTCGHSA enrichment
  6. 2026-09-09 01:35 UTCEG score recompute
  7. 2026-09-09 01:35 UTCGHSA enrichment
  8. 2026-09-08 22:00 UTCEPSS rescore
  9. 2026-09-07 16:01 UTCEPSS rescore
  10. 2026-09-07 15:57 UTCGHSA enrichment
  11. 2026-09-06 16:14 UTCEG score recompute
  12. 2026-09-06 16:14 UTCGHSA enrichment
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-05 16:31 UTCEG score recompute
  15. 2026-09-05 16:31 UTCGHSA enrichment
  16. 2026-09-04 16:46 UTCEG score recompute
  17. 2026-09-04 16:45 UTCGHSA enrichment
  18. 2026-09-04 05:06 UTCEPSS rescore
  19. 2026-09-03 17:02 UTCGHSA enrichment
  20. 2026-09-02 17:18 UTCEG score recompute
  21. 2026-09-02 17:17 UTCGHSA enrichment
  22. 2026-09-02 14:11 UTCEPSS rescore
  23. 2026-09-01 17:34 UTCEG score recompute
  24. 2026-09-01 17:34 UTCGHSA enrichment
  25. 2026-09-01 13:53 UTCEPSS rescore
  26. 2026-09-01 04:39 UTCEPSS rescore
  27. 2026-08-31 17:51 UTCEG score recompute
  28. 2026-08-31 17:51 UTCGHSA enrichment
  29. 2026-08-30 19:17 UTCEPSS rescore
  30. 2026-08-30 17:32 UTCEG score recompute
  31. 2026-08-30 17:32 UTCGHSA enrichment
  32. 2026-08-30 01:22 UTCEPSS rescore
  33. 2026-08-29 17:50 UTCEG score recompute
  34. 2026-08-29 17:49 UTCGHSA enrichment
  35. 2026-08-28 21:41 UTCEPSS rescore
  36. 2026-08-28 18:02 UTCGHSA enrichment
  37. 2026-08-27 18:16 UTCEG score recompute
  38. 2026-08-27 18:16 UTCGHSA enrichment
  39. 2026-08-27 14:25 UTCEPSS rescore
  40. 2026-08-26 17:00 UTCEG score recompute
  41. 2026-08-26 17:00 UTCGHSA enrichment
  42. 2026-08-26 14:46 UTCEPSS rescore
  43. 2026-08-25 17:03 UTCEG score recompute
  44. 2026-08-25 17:03 UTCGHSA enrichment
  45. 2026-08-25 13:48 UTCEPSS rescore
  46. 2026-08-24 17:19 UTCEG score recompute
  47. 2026-08-24 17:19 UTCGHSA enrichment
  48. 2026-08-24 16:52 UTCEG score recompute
  49. 2026-08-24 16:52 UTCGHSA enrichment
  50. 2026-08-24 04:23 UTCEG score recompute
  51. 2026-08-24 03:51 UTCEG score recompute
  52. 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 85.4% 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

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