CVE-2017-6920
9.8
CRITICAL · CVSS 3.0 · EPSS 20.5% (pctl 97)
Patch early
EPSS 20.5% — above the 10% action threshold.
Description
Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 20.48% — more likely to be exploited than 97% of all CVEs |
| Weakness | CWE-19 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-08-06 |
| Last modified | 2026-06-17 |
Affected (1)
| Vendor | Product |
|---|---|
| drupal | drupal |
References
- http://www.securityfocus.com/bid/99211
- http://www.securitytracker.com/id/1038781
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
- http://www.securityfocus.com/bid/99211
- http://www.securitytracker.com/id/1038781
- https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple
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