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Vulnerability record · CVE-2019-11717 · published 23 July 2019

CVE-2019-11717: Mozilla firefox vulnerability

Mozilla · Firefox

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.

5.3 CVSS 3.1 Medium EPSS 2.1% · top 18.6% CWE-116 · CWE-116
5.3CVSS 3.1 base score, v2 5.0
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
26References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1548306 ExploitIssue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-12 Third Party Advisory
https://security.gentoo.org/glsa/201908-20 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-21/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-22/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-23/ Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1548306 ExploitIssue TrackingVendor Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/201908-12 Third Party Advisory
https://security.gentoo.org/glsa/201908-20 Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-21/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-22/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-23/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-11717), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.