In Drupal versions 8.4.x versions before 8.4.5 users with permission to post comments are able to view content and comments they do not have access to, and are also able to add comments to this content. This vulnerability is mitigated by the fact that the comment system must be enabled and the attacker must have permission to post comments.
CVE-2017-6926
This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 1.2%, top 34% 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).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.1
- EG Score
- 8.1(medium)
- EPSS
- 65.8%
- KEV
- Not listed
Published
March 1, 2018
Last Modified
November 21, 2024
References (2)
- mlhess@drupalhttps://www.drupal.org/sa-core-2018-001
- af854a3a-2127-422b-91ae-364da2661108https://www.drupal.org/sa-core-2018-001
Affected Packages
(2 across 1 ecosystem)
Packagist(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| drupal/core | — | 7.57 | — |
| drupal/drupal | — | 7.57 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× 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.
- 2026-07-22 22:10 UTCEG score recompute
- 2026-07-22 14:04 UTCEPSS rescore
- 2026-07-21 16:48 UTCOSV refresh
- 2026-07-21 15:21 UTCEPSS rescore
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- 2026-07-06 02:20 UTCEPSS rescore
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- 2026-07-04 12:26 UTCOSV refresh
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- 2026-06-16 00:13 UTCOSV refresh
- 2026-06-15 17:45 UTCEPSS rescore
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- 2026-05-31 22:28 UTCEPSS rescore
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- 2026-05-29 13:41 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 13:42 UTCEPSS rescore
- 2026-05-28 10:54 UTCEG score recompute
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-27 13:38 UTCEPSS rescore
- 2026-05-26 17:01 UTCOSV refresh
- 2026-05-26 13:42 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2017-6926?
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What is the CVSS score of CVE-2017-6926?
How do I remediate CVE-2017-6926?
Dependency Blast Radius
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