CVE-2026-16451

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-07-21. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A security flaw has been discovered in zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead. This impacts an unknown function of the file /api/system/file/upload of the component com.zs.file.controller.SysFileController. Performing a manipulation of the argument File results in unrestricted upload. It is possible to initiate the attack remotely. The exploit has been released to the public and may be used for attacks. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

July 21, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jul 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Unrestricted File Extension Upload · Issue #6 · zsadmin2025/zs-admin-java · GitHub

https://github.com/zsadmin2025/zs-admin-java/issues/6

Vendor Advisories for CVE-2026-16451(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 15× in last 7d / 68× 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.

Showing the most recent 100 of 144 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16451?
CVE-2026-16451 is a medium vulnerability published on July 21, 2026. A security flaw has been discovered in zsadmin2025 ZS-Admin up to b52e14536d59fda11e56e2536a1c32e82a38cead. This impacts an unknown function of the file /api/system/file/upload of the component com.zs.file.controller.SysFileController. Performing a manipulation of the argument File results in…
When was CVE-2026-16451 disclosed?
CVE-2026-16451 was first published in the National Vulnerability Database on July 21, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16451 actively exploited?
CVE-2026-16451 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 72.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16451?
CVE-2026-16451 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-16451?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16451, 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

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