CSRF in Mozilla Firefox

CVE-2018-12370

In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. This vulnerability affects Firefox < 61.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.011 (63.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-12370?
CVE-2018-12370 is a high-severity vulnerability in Mozilla Firefox, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2018-10-18.
How severe is CVE-2018-12370?
High severity. CVSS v3 base score is 8.8 out of 10.