CVE-2019-11718

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-07-23 · updated 2026-06-17
Weakness: CWE-74

Description

Activity Stream can display content from sent from the Snippet Service website. This content is written to innerHTML on the Activity Stream page without sanitization, allowing for a potential access to other information available to the Activity Stream, such as browsing history, if the Snipper Service were compromised. This vulnerability affects Firefox < 68.

Affected products

Mozilla Firefox: before 68.0 — fixed in 68.0
openSUSE Leap: 15.0, 15.1

How to fix

Upgrade to a fixed version: Mozilla Firefox 68.0. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1408349
https://security.gentoo.org/glsa/201908-12
https://www.mozilla.org/security/advisories/mfsa2019-21/
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1408349
https://security.gentoo.org/glsa/201908-12
https://www.mozilla.org/security/advisories/mfsa2019-21/

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