CVE-2026-25903

MEDIUMNVD 6.66.6—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.6 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.6
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.6Exploit: NoneExposed: 0

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

Apache NiFi 1.1.0 through 2.7.2 are missing authorization when updating configuration properties on extension components that have specific Required Permissions based on the Restricted annotation. The Restricted annotation indicates additional privileges required to add the annotated component to the flow configuration, but framework authorization did not check restricted status when updating a component previously added. The missing authorization requires a more privileged user to add a restricted component to the flow configuration, but permits a less privileged user to make property configuration changes. Apache NiFi installations that do not implement different levels of authorization for Restricted components are not subject to this vulnerability because the framework enforces write permissions as the security boundary. Upgrading to Apache NiFi 2.8.0 is the recommended mitigation.

CVSS v3
6.6
EG Score
6.6(medium)
EPSS
50.9%
KEV
Not listed

Published

February 17, 2026

Last Modified

March 30, 2026

References (2)

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.apache.nifi:nifi-web-api1.1.0 ... 2.7.2 (64 versions)2.8.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 51× 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. 2026-07-21 15:24 UTCEPSS rescore
  2. 2026-07-21 15:24 UTCEPSS rescore
  3. 2026-07-20 17:08 UTCEPSS rescore
  4. 2026-07-19 14:31 UTCEPSS rescore
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  8. 2026-07-18 10:04 UTCEPSS rescore
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  10. 2026-07-17 13:59 UTCOSV refresh
  11. 2026-07-16 17:03 UTCEPSS rescore
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  13. 2026-07-15 16:57 UTCEPSS rescore
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  17. 2026-07-13 22:30 UTCEPSS rescore
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  20. 2026-07-12 05:46 UTCEPSS rescore
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  1. 2026-07-07 13:46 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
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  4. 2026-07-06 02:23 UTCEPSS rescore
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  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
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  9. 2026-07-01 15:06 UTCEPSS rescore
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  11. 2026-06-30 23:22 UTCEPSS rescore
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  18. 2026-06-27 03:08 UTCEPSS rescore
  19. 2026-06-25 13:49 UTCEPSS rescore
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  21. 2026-06-24 14:05 UTCEPSS rescore
  22. 2026-06-24 14:05 UTCEPSS rescore
  23. 2026-06-23 21:33 UTCEPSS rescore
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  25. 2026-06-22 14:25 UTCEPSS rescore
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  27. 2026-06-21 14:56 UTCEPSS rescore
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  29. 2026-06-21 01:59 UTCEPSS rescore
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  31. 2026-06-19 19:25 UTCEPSS rescore
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  33. 2026-06-18 17:52 UTCEPSS rescore
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  37. 2026-06-15 17:48 UTCEPSS rescore
  38. 2026-06-14 23:18 UTCEPSS rescore
  39. 2026-06-13 23:00 UTCEPSS rescore
  40. 2026-06-12 23:12 UTCEPSS rescore
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  42. 2026-06-11 14:00 UTCEPSS rescore
  43. 2026-06-10 22:18 UTCEPSS rescore
  44. 2026-06-10 22:18 UTCEPSS rescore
  45. 2026-06-10 13:22 UTCEPSS rescore
  46. 2026-06-08 14:17 UTCEPSS rescore
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-07 15:25 UTCEPSS rescore
  49. 2026-06-07 15:25 UTCEPSS rescore
  50. 2026-06-07 15:25 UTCEPSS rescore
  51. 2026-06-06 13:47 UTCEPSS rescore
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  53. 2026-06-05 22:47 UTCEPSS rescore
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  55. 2026-06-05 06:10 UTCEPSS rescore
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  57. 2026-06-04 13:12 UTCEPSS rescore
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  59. 2026-06-02 20:13 UTCEPSS rescore
  60. 2026-06-02 20:13 UTCEPSS rescore
  61. 2026-06-01 13:51 UTCEPSS rescore
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  63. 2026-05-31 22:30 UTCEPSS rescore
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  65. 2026-05-31 00:16 UTCEPSS rescore
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  67. 2026-05-29 13:47 UTCEG score recompute
  68. 2026-05-29 13:44 UTCEPSS rescore
  69. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-25903?
CVE-2026-25903 is a medium vulnerability published on February 17, 2026. Apache NiFi 1.1.0 through 2.7.2 are missing authorization when updating configuration properties on extension components that have specific Required Permissions based on the Restricted annotation. The Restricted annotation indicates additional privileges required to add the annotated component to…
When was CVE-2026-25903 disclosed?
CVE-2026-25903 was first published in the National Vulnerability Database on February 17, 2026, with the most recent update on March 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-25903 actively exploited?
CVE-2026-25903 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 50.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-25903?
CVE-2026-25903 has a CVSS v3 base score of 6.6 (NVD).
How do I remediate CVE-2026-25903?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25903, 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.

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