CVE-2014-6438

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-17. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 4%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

The URI.decode_www_form_component method in Ruby before 1.9.2-p330 allows remote attackers to cause a denial of service (catastrophic regular expression backtracking, resource consumption, or application crash) via a crafted string.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation4% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
4%
EPSS %ILE
90%
KEV
Not listed

Published

September 6, 2017

Last Modified

June 17, 2026

References (8)

Vendor Advisories for CVE-2014-6438(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatruby4-0-main-4.0.0-33.3.hum12026-04-17redhat
redhatruby3-3-main-3.3.10-23.1.hum12026-04-09redhat
redhatruby3-4-main-3.4.8-31.1.hum12026-04-09redhat

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

(1 across 1 ecosystem)
Debian:6.0(1)
PackageVulnerable rangeFixed inDependents
ruby1.9.11.9.2.0-2, 1.9.2.0-2+armhf1.9.2.0-2+deb6u6—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 19× 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 125 total refreshes for this CVE.

  1. 2026-09-06 13:42 UTCEPSS rescore
  2. 2026-09-05 15:23 UTCEPSS rescore
  3. 2026-09-04 13:55 UTCEPSS rescore
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  1. 2026-07-30 16:23 UTCEPSS rescore
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  3. 2026-07-28 15:31 UTCEPSS rescore
  4. 2026-07-26 14:50 UTCEPSS rescore
  5. 2026-07-24 14:13 UTCEPSS rescore
  6. 2026-07-23 14:14 UTCEPSS rescore
  7. 2026-07-23 01:14 UTCEG score recompute
  8. 2026-07-23 00:17 UTCEG score recompute
  9. 2026-07-22 21:55 UTCEG score recompute
  10. 2026-07-22 14:04 UTCEPSS rescore
  11. 2026-07-21 15:21 UTCEPSS rescore
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  21. 2026-07-15 01:56 UTCEPSS rescore
  22. 2026-07-13 22:26 UTCEPSS rescore
  23. 2026-07-12 05:42 UTCEPSS rescore
  24. 2026-07-12 05:42 UTCEPSS rescore
  25. 2026-07-11 08:23 UTCEPSS rescore
  26. 2026-07-09 19:05 UTCEPSS rescore
  27. 2026-07-08 15:10 UTCEPSS rescore
  28. 2026-07-07 13:42 UTCEPSS rescore
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  40. 2026-06-27 03:05 UTCEPSS rescore
  41. 2026-06-25 13:47 UTCEPSS rescore
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  43. 2026-06-24 14:02 UTCEPSS rescore
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  45. 2026-06-23 21:30 UTCEPSS rescore
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  47. 2026-06-22 14:22 UTCEPSS rescore
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  49. 2026-06-21 01:57 UTCEPSS rescore
  50. 2026-06-19 19:23 UTCEPSS rescore
  51. 2026-06-18 17:49 UTCEPSS rescore
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  53. 2026-06-17 17:49 UTCEPSS rescore
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  58. 2026-06-14 23:14 UTCEPSS rescore
  59. 2026-06-13 22:57 UTCEPSS rescore
  60. 2026-06-12 23:08 UTCEPSS rescore
  61. 2026-06-11 13:57 UTCEPSS rescore
  62. 2026-06-10 22:15 UTCEPSS rescore
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  72. 2026-06-02 20:10 UTCEPSS rescore
  73. 2026-06-02 20:10 UTCEPSS rescore
  74. 2026-06-01 13:49 UTCEPSS rescore
  75. 2026-06-01 13:49 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2014-6438?
CVE-2014-6438 is a high vulnerability published on September 6, 2017. The URI.decodewwwform_component method in Ruby before 1.9.2-p330 allows remote attackers to cause a denial of service (catastrophic regular expression backtracking, resource consumption, or application crash) via a crafted string.
When was CVE-2014-6438 disclosed?
CVE-2014-6438 was first published in the National Vulnerability Database on September 6, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-6438 actively exploited?
CVE-2014-6438 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4% probability of exploitation in the next 30 days, which ranks it in the top 9.9% of all scored CVEs.
What is the CVSS score of CVE-2014-6438?
CVE-2014-6438 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2014-6438?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-6438, 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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