CVE-2017-6921

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 1.8%, top 23% 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
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 5.9Exploit: None knownExposed: 0

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

In Drupal 8 prior to 8.3.4; The file REST resource does not properly validate some fields when manipulating files. A site is only affected by this if the site has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and an attacker can get or register a user account on the site with permissions to upload files and to modify the file resource.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity59% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

January 15, 2019

Last Modified

November 21, 2024

References (6)

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
drupal/core8.0.0 ... 8.3.3 (58 versions)8.3.4—
drupal/drupal8.0.0 ... 8.3.3 (64 versions)8.3.4—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 44× 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. 2026-07-26 14:51 UTCEPSS rescore
  2. 2026-07-26 14:51 UTCEPSS rescore
  3. 2026-07-23 14:15 UTCEPSS rescore
  4. 2026-07-23 01:30 UTCEG score recompute
  5. 2026-07-22 22:10 UTCEG score recompute
  6. 2026-07-22 14:04 UTCEPSS rescore
  7. 2026-07-21 15:21 UTCEPSS rescore
  8. 2026-07-20 23:47 UTCOSV refresh
  9. 2026-07-20 17:04 UTCEPSS rescore
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  11. 2026-07-19 14:28 UTCEPSS rescore
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  24. 2026-07-12 05:43 UTCEPSS rescore
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  1. 2026-07-09 19:06 UTCEPSS rescore
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  3. 2026-07-07 13:42 UTCEPSS rescore
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  11. 2026-07-03 19:26 UTCOSV refresh
  12. 2026-07-02 16:54 UTCEPSS rescore
  13. 2026-07-01 15:03 UTCEPSS rescore
  14. 2026-06-30 23:19 UTCEPSS rescore
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  20. 2026-06-27 03:06 UTCEPSS rescore
  21. 2026-06-25 13:47 UTCEPSS rescore
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  24. 2026-06-23 21:30 UTCEPSS rescore
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  26. 2026-06-22 14:23 UTCEPSS rescore
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  28. 2026-06-21 14:54 UTCEPSS rescore
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  30. 2026-06-21 01:57 UTCEPSS rescore
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  38. 2026-06-15 07:43 UTCOSV refresh
  39. 2026-06-14 23:14 UTCEPSS rescore
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  41. 2026-06-13 22:58 UTCEPSS rescore
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  43. 2026-06-12 23:09 UTCEPSS rescore
  44. 2026-06-12 23:09 UTCEPSS rescore
  45. 2026-06-11 13:57 UTCEPSS rescore
  46. 2026-06-10 22:15 UTCEPSS rescore
  47. 2026-06-10 13:19 UTCEPSS rescore
  48. 2026-06-08 14:14 UTCEPSS rescore
  49. 2026-06-08 14:14 UTCEPSS rescore
  50. 2026-06-07 15:22 UTCEPSS rescore
  51. 2026-06-07 15:22 UTCEPSS rescore
  52. 2026-06-06 13:45 UTCEPSS rescore
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  54. 2026-06-05 22:44 UTCEPSS rescore
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  60. 2026-06-02 20:11 UTCEPSS rescore
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  64. 2026-05-31 22:28 UTCEPSS rescore
  65. 2026-05-31 00:14 UTCEPSS rescore
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  67. 2026-05-29 13:41 UTCEPSS rescore
  68. 2026-05-28 13:42 UTCEPSS rescore
  69. 2026-05-28 13:42 UTCEPSS rescore
  70. 2026-05-27 23:22 UTCEG score recompute
  71. 2026-05-27 13:38 UTCEPSS rescore
  72. 2026-05-27 13:38 UTCEPSS rescore
  73. 2026-05-26 17:01 UTCOSV refresh
  74. 2026-05-26 13:42 UTCEPSS rescore
  75. 2026-05-26 07:17 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-6921?
CVE-2017-6921 is a medium vulnerability published on January 15, 2019. In Drupal 8 prior to 8.3.4; The file REST resource does not properly validate some fields when manipulating files. A site is only affected by this if the site has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and an attacker can get or…
When was CVE-2017-6921 disclosed?
CVE-2017-6921 was first published in the National Vulnerability Database on January 15, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-6921 actively exploited?
CVE-2017-6921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 23.3% of all scored CVEs.
What is the CVSS score of CVE-2017-6921?
CVE-2017-6921 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2017-6921?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-6921, 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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