CVE-2020-26955

MEDIUM

Firefox for Android < 83.0 - Cookie Reuse Across Private and Non-Private Browsing Modes

Title source: llm
STIX 2.1

Description

When a user downloaded a file in Firefox for Android, if a cookie is set, it would have been re-sent during a subsequent file download operation on the same domain, regardless of whether the original and subsequent request were in private and non-private browsing modes. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

References (2)

Core 2
Core References
Issue Tracking, Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1663261
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2020-50/

Scores

CVSS v3 6.5
EPSS 0.0082
EPSS Percentile 52.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Details

CWE
CWE-565
Status published
Products (1)
mozilla/firefox < 83.0
Published Dec 09, 2020
Tracked Since Feb 18, 2026