CVE-2017-5382: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

Feed preview for RSS feeds can be used to capture errors and exceptions generated by privileged content, allowing for the exposure of internal information not meant to be seen by web content. This vulnerability affects Firefox < 51.

Affected products

• Mozilla Firefox: before 51.0 (fixed in 51.0)

Published 2018-06-11. Last modified 2026-06-17.