Resource management error in Firefox for Android - CVE-2020-26955
Published: November 17, 2020
Vulnerability identifier: #VU48474
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-26955
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to the way cookies are handled during file downloads. 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.
Affected software
Firefox for Android
firefox (Alpine package)
firefox (Alpine package)
How to mitigate CVE-2020-26955
Install updates from vendor's website.
Firefox for Android - update to 83.0.0