CVE-2026-42353

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% 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
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware passes the user-controlled lng and ns values from getResourcesHandler directly into i18next.services.backendConnector.load(languages, namespaces, …) without any sanitization. Depending on which backend is configured, the unvalidated path segments enable either path traversal or SSRF. This issue has been patched in version 3.9.3.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
30.8%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 12, 2026

Advisory Details (1)

Auto-updated May 8, 2026
Patch available. Sources: github.
github Patch Available

Path traversal / SSRF in i18next-http-middleware via user-controlled language and namespace parameters · Advisory · i18next/i18next-http-middleware · GitHub

https://github.com/i18next/i18next-http-middleware/security/advisories/GHSA-jfgf-83c5-2c4m

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
i18next-http-middleware—3.9.3—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 43× 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 101 total refreshes for this CVE.

  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:27 UTCEPSS rescore
  3. 2026-07-09 19:10 UTCEPSS rescore
  4. 2026-07-08 15:15 UTCEPSS rescore
  5. 2026-07-07 13:46 UTCEPSS rescore
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  12. 2026-06-30 23:22 UTCEPSS rescore
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  15. 2026-06-28 03:59 UTCEG score recompute
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  1. 2026-06-21 14:56 UTCEPSS rescore
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  10. 2026-06-15 17:49 UTCEPSS rescore
  11. 2026-06-15 04:52 UTCEG score recompute
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  18. 2026-06-12 20:48 UTCEG score recompute
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  21. 2026-06-11 14:00 UTCEPSS rescore
  22. 2026-06-11 04:57 UTCEG score recompute
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-10 15:46 UTCEG score recompute
  25. 2026-06-10 13:22 UTCEPSS rescore
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  27. 2026-06-10 02:36 UTCEG score recompute
  28. 2026-06-09 13:25 UTCEG score recompute
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  30. 2026-06-08 14:17 UTCEPSS rescore
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  32. 2026-06-08 11:04 UTCEG score recompute
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  34. 2026-06-07 15:25 UTCEPSS rescore
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  36. 2026-06-07 08:42 UTCEG score recompute
  37. 2026-06-06 19:32 UTCEG score recompute
  38. 2026-06-06 13:47 UTCEPSS rescore
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  40. 2026-06-06 06:21 UTCEG score recompute
  41. 2026-06-05 22:47 UTCEPSS rescore
  42. 2026-06-05 17:10 UTCEG score recompute
  43. 2026-06-05 03:59 UTCEG score recompute
  44. 2026-06-04 14:45 UTCEG score recompute
  45. 2026-06-04 13:12 UTCEPSS rescore
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  47. 2026-06-04 01:34 UTCEG score recompute
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  50. 2026-06-02 20:13 UTCEPSS rescore
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  53. 2026-06-01 13:52 UTCEPSS rescore
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  55. 2026-06-01 07:38 UTCEG score recompute
  56. 2026-05-31 22:30 UTCEPSS rescore
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  60. 2026-05-29 13:44 UTCEPSS rescore
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  68. 2026-05-26 13:44 UTCEPSS rescore
  69. 2026-05-26 07:18 UTCEPSS rescore
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  71. 2026-05-23 00:07 UTCEG score recompute
  72. 2026-05-20 22:38 UTCEPSS rescore
  73. 2026-05-20 22:38 UTCEPSS rescore
  74. 2026-05-20 13:33 UTCEG score recompute
  75. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42353?
CVE-2026-42353 is a high vulnerability published on May 8, 2026. i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware passes the user-controlled lng and ns values from getResourcesHandler directly into…
When was CVE-2026-42353 disclosed?
CVE-2026-42353 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42353 actively exploited?
CVE-2026-42353 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42353?
CVE-2026-42353 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-42353?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42353, 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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