Is CVE-2019-11717 actively exploited?

CVE-2019-11717 has no public evidence of in-the-wild exploitation as of 2025-11-25.

What is the CVSS score for CVE-2019-11717?

CVE-2019-11717 has a CVSS score of 5.3 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

How do I patch CVE-2019-11717?

Patch guidance is available from mozilla security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-11717.

CVE-2019-11717 - remediation guidance & executive summary

Q: Which products are affected by CVE-2019-11717?

7 products: mozilla firefox, mozilla firefox, mozilla thunderbird, debian debian linux, novell suse package hub for suse linux enterprise, and 2 more.

Description

A vulnerability exists where the caret ("^") character is improperly escaped constructing some URIs due to it being used as a separator, allowing for possible spoofing of origin attributes. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: low
Availability: none
Weaknesses: CWE-116

Metadata

Primary Vendor: MOZILLA
Published: 7/23/2019
Last Modified: 11/25/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mozilla : firefoxmozilla : firefoxmozilla : thunderbirddebian : debian_linuxnovell : suse_package_hub_for_suse_linux_enterpriseopensuse : leapopensuse : leap

Remediation Guidance

Executive Summary

View on NIST NVD