CVE-2019-11358
CVSS v3
6.1
MEDIUM
EPSS Score
86.8 %
exploit probability, as of 2026-10-04
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.
Technical details
- Published
- 2019-04-20
- Exploit-DB
- EDB-52141
Frequently asked questions
What is CVE-2019-11358?
jQuery before 3.4.0, as used in Drupal, Backdrop CMS, and other products, mishandles jQuery.extend(true, {}, ...) because of Object.prototype pollution. If an unsanitized source object contained an enumerable __proto__ property, it could extend the native Object.prototype.
Is CVE-2019-11358 actively exploited?
Active exploitation of CVE-2019-11358 has not been confirmed. Its EPSS score was 86.8% on 2026-10-04, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-11358?
CVE-2019-11358 has a CVSS v3 base score of 6.1 (MEDIUM severity).
Is CVE-2019-11358 affecting your environment?
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