CVE-2017-7844

Name: CVE-2017-7844
Creator: NVD / NIST
Published: 2018-06-11T21:29:11.967+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.78%

Last modified Jun 17, 2026

CVE-2017-7844 is a vulnerability of currently unknown severity. A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determine which pages a user has in their history. This can allow a malicious website to query user history. EPSS estimates a 1.78% chance of exploitation in the next 30 days.

Description

A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determine which pages a user has in their history. This can allow a malicious website to query user history. Note: This issue only affects Firefox 57. Earlier releases are not affected. This vulnerability affects Firefox < 57.0.1.

Metrics

EPSS Probability

1.78%

75.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 57.0.1

References

http://www.securityfocus.com/bid/102039Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039954Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1420001Issue Tracking, Permissions Required, Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-27/Vendor Advisory
http://www.securityfocus.com/bid/102039Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039954Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1420001Issue Tracking, Permissions Required, Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2017-27/Vendor Advisory

Timeline

Published: Jun 11, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7844?

How severe is CVE-2017-7844?

Severity scoring for CVE-2017-7844 is pending analysis. The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7844?

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-2017-7844?

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

Scan your code now

Source: NVD / NIST