CVE-2026-84292

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 87% 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, secondary
Trending — Patch released this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host to userinfo and pointing the authority at an attacker-controlled host. Both fast-uri and Node's URL read the result back as the attacker's host with no error, so re-validating the built URI does not catch it. This affects applications that build URIs from parts and assign untrusted data to the port component through the serialize, normalize, or equal functions in their object forms. The issue affects fast-uri versions before 2.4.6, from 3.0.0 before 3.1.7, and from 4.0.0 before 4.1.4. It is fixed in 2.4.6, 3.1.7, and 4.1.4, where recomposeAuthority rejects any port that is not a digit sequence per RFC 3986.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 4, 2026

Advisory Details (2)

Auto-updated Sep 2, 2026
Patch available. Sources: github.
github Patch Available

fast-uri vulnerable to authority injection via an unvalidated port in serialize · Advisory · fastify/fast-uri · GitHub

https://github.com/fastify/fast-uri/security/advisories/GHSA-qw65-cvwx-89v3
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html

Vendor Advisories for CVE-2026-84292(5)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatansible-automation-platform/automation-portal:17887757482026-09-08redhat
redhatansible-automation-platform/automation-portal:17887835912026-09-08redhat
redhatgrafana13-2-main-13.2.1-0.2.hum12026-09-08redhat
redhatgrafana13-1-main-13.1.3-0.6.hum12026-09-08redhat
redhatgrafana12-4-main-12.4.9-0.6.hum12026-09-04redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.5-1 (14 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-ajv8.12.0~ds+~2.1.1-5 ... 8.20.0~ds+~cs7.1.4-1 (13 versions)8.20.0~ds+~cs7.1.5-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 27× 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. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 12:01 UTCEG score recompute
  4. 2026-09-11 12:01 UTCVendor advisory
  5. 2026-09-10 23:52 UTCVendor advisory
  6. 2026-09-10 11:39 UTCEG score recompute
  7. 2026-09-10 11:39 UTCVendor advisory
  8. 2026-09-09 23:30 UTCVendor advisory
  9. 2026-09-09 11:19 UTCVendor advisory
  10. 2026-09-08 23:10 UTCEG score recompute
  11. 2026-09-08 23:10 UTCVendor advisory
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-08 05:41 UTCVendor advisory
  14. 2026-09-07 17:31 UTCVendor advisory
  15. 2026-09-07 05:23 UTCVendor advisory
  16. 2026-09-06 17:11 UTCEG score recompute
  17. 2026-09-06 13:48 UTCEPSS rescore
  18. 2026-09-05 16:53 UTCEG score recompute
  19. 2026-09-05 15:31 UTCEPSS rescore
  20. 2026-09-04 16:33 UTCEG score recompute
  21. 2026-09-04 06:30 UTCEG score recompute
  22. 2026-09-04 05:07 UTCEPSS rescore
  23. 2026-09-03 14:31 UTCEG score recompute
  24. 2026-09-03 13:25 UTCEG score recompute
  25. 2026-09-03 08:28 UTCEG score recompute
Show 2 more
  1. 2026-09-02 20:17 UTCEG score recompute
  2. 2026-09-02 20:15 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-84292?
CVE-2026-84292 is a high vulnerability published on September 2, 2026. fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host to…
When was CVE-2026-84292 disclosed?
CVE-2026-84292 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84292 actively exploited?
CVE-2026-84292 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 86.8% of all scored CVEs.
What is the CVSS score of CVE-2026-84292?
CVE-2026-84292 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-84292?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84292, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-84292

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