CVE-2019-11717

Name: CVE-2019-11717
Creator: NVD / NIST
Published: 2019-07-23T14:15:15.937+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 2.13%

Last modified Jun 17, 2026

CVE-2019-11717 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 2.13% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

2.13%

79.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-116

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 60.8.0
Mozilla	Firefox	< 68.0
Mozilla	Thunderbird	< 60.8.0
Debian	Debian Linux	8.0
Novell	Suse Package Hub For Suse Linux Enterprise	12
Opensuse	Leap	15.0
Opensuse	Leap	15.1

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1548306Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201908-12Third Party Advisory
https://security.gentoo.org/glsa/201908-20Third 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.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlThird Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1548306Exploit, Issue Tracking, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201908-12Third Party Advisory
https://security.gentoo.org/glsa/201908-20Third 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

Timeline

Published: Jul 23, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11717?

How severe is CVE-2019-11717?

CVE-2019-11717 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.13% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11717?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-11717?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST