CVE-2026-19852

MEDIUMPre-NVD 6.16.1
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.1Exploit: None knownExposed services: Not assessed

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

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
6.1MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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 (value × EchelonGraph’s weight)
Severity61% × 45%
The EG Score, 6.1 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
13th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 24, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 24, 2026
No fix on record 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 17× in last 7d / 70× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 131 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 31 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-10-12 16:24 UTCEG score recompute
  4. 2026-10-11 20:06 UTCEG score recompute
  5. 2026-10-11 17:19 UTCEG score recompute
  6. 2026-10-11 14:51 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-10-10 13:16 UTCEG score recompute
  10. 2026-10-10 13:16 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-10-09 08:00 UTCEG score recompute
  13. 2026-10-09 08:00 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  14. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  15. 2026-10-08 07:19 UTCEG score recompute
  16. 2026-10-08 07:18 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  18. 2026-10-07 07:32 UTCEG score recompute
  19. 2026-10-07 07:32 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  21. 2026-10-06 07:46 UTCEG score recompute
  22. 2026-10-06 07:46 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  23. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  24. 2026-10-05 05:55 UTCEG score recompute
  25. 2026-10-05 05:55 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
Show 75 more
  1. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-10-04 06:10 UTCEG score recompute
  3. 2026-10-04 06:10 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  4. 2026-10-03 06:28 UTCEG score recompute
  5. 2026-10-03 06:28 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  6. 2026-10-02 06:45 UTCEG score recompute
  7. 2026-10-02 06:45 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  8. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-01 07:03 UTCEG score recompute
  10. 2026-10-01 07:03 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  11. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-09-30 07:19 UTCEG score recompute
  13. 2026-09-30 07:19 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  14. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-09-29 00:11 UTCEG score recompute
  16. 2026-09-29 00:11 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  17. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-09-28 00:29 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  19. 2026-09-27 00:46 UTCEG score recompute
  20. 2026-09-27 00:46 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-09-24 22:19 UTCEG score recompute
  23. 2026-09-24 22:19 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  24. 2026-09-23 22:35 UTCEG score recompute
  25. 2026-09-23 22:35 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  26. 2026-09-22 22:53 UTCEG score recompute
  27. 2026-09-22 22:53 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  28. 2026-09-21 23:10 UTCEG score recompute
  29. 2026-09-21 23:10 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  30. 2026-09-20 23:27 UTCEG score recompute
  31. 2026-09-20 23:27 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  32. 2026-09-19 23:31 UTCEG score recompute
  33. 2026-09-19 23:31 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  34. 2026-09-18 23:48 UTCEG score recompute
  35. 2026-09-18 23:48 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  36. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  37. 2026-09-18 00:06 UTCEG score recompute
  38. 2026-09-18 00:06 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  39. 2026-09-16 23:20 UTCEG score recompute
  40. 2026-09-16 23:20 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  41. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  42. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  43. 2026-09-15 23:37 UTCEG score recompute
  44. 2026-09-15 23:37 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  45. 2026-09-14 23:53 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  46. 2026-09-14 00:10 UTCEG score recompute
  47. 2026-09-14 00:10 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  48. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  49. 2026-09-13 00:26 UTCEG score recompute
  50. 2026-09-13 00:26 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  51. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  52. 2026-09-12 00:43 UTCEG score recompute
  53. 2026-09-12 00:43 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  54. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  55. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-09-11 01:00 UTCEG score recompute
  57. 2026-09-11 01:00 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  58. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  59. 2026-09-10 01:17 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  60. 2026-09-09 01:35 UTCEG score recompute
  61. 2026-09-09 01:35 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  62. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  63. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  64. 2026-09-07 15:57 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  65. 2026-09-06 16:14 UTCEG score recompute
  66. 2026-09-06 16:14 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  67. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  68. 2026-09-05 16:31 UTCEG score recompute
  69. 2026-09-05 16:31 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  70. 2026-09-04 16:46 UTCEG score recompute
  71. 2026-09-04 16:45 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  72. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  73. 2026-09-03 17:02 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1
  74. 2026-09-02 17:18 UTCEG score recompute
  75. 2026-09-02 17:17 UTCGHSA enrichmentGHSA-q3pc-8mvq-c8v3 · GitHub CVSS 6.1

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19852?
CVE-2026-19852 is a medium-severity vulnerability; its CVE record was 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 the CVE record for CVE-2026-19852 published?
The CVE record for CVE-2026-19852 was published on August 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-19852 actively exploited?
CVE-2026-19852 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19852?
CVE-2026-19852 has a CVSS base score of 6.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19852?
No fix for CVE-2026-19852 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-2026-19852 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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