CVE-2020-26975
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk56th percentile - higher than 56% of all known CVEs
Summary
A malicious app on the user's device could broadcast an Intent to Firefox for Android with arbitrary headers, leading to attacks such as abusing ambient authority or session fixation. This was fixed by only allowing certain safe-listed headers. Affects Firefox < 84.
Risk Assessment
An attacker could exploit this to perform session-based attacks or abuse trust, potentially leading to account takeover or unauthorized actions.
Recommendation
Update Firefox for Android to version 84 or later.
Other vulnerabilities in Firefox for Android
See all- CVE-2023-29534Critical
In Firefox and Focus for Android, techniques were discovered to obscure the fullscreen notification, which could lead to user confusion and spoofing attacks. This affects Firefox for Android and Focus for Android versions prior to 112.
- CVE-2026-74975Medium
A spoofing issue exists in the Downloads component in Firefox for Android. This vulnerability was fixed in Firefox 154.
- CVE-2026-18809Medium
Information disclosure in Firefox for Android and Firefox Focus for Android. This vulnerability was fixed in Firefox 153.0.3.
- CVE-2026-16397Medium
Clickjacking vulnerability in the WebExtensions component in Firefox for Android. This issue was fixed in Firefox 153.
- CVE-2026-16373High
Vulnerability in the Privacy component in Firefox for Android. The flaw leads to information disclosure. The issue was fixed in Firefox 153.
- CVE-2023-29546Medium
When recording the screen while in Private Browsing on Firefox for Android, the address bar and keyboard were not hidden, potentially leaking sensitive information. This bug only affects Firefox for Android and Focus for Android versions prior to 112.
- CVE-2023-25747High
Potential use-after-free in libaudio, fixed by disabling AAudio backend on Android below version 30. Affects only Firefox for Android before 110.1.0.
- CVE-2022-38474Medium
A website that had permission to access the microphone could record audio without the audio notification being shown. This bug does not allow the attacker to bypass the permission prompt - it only affects the notification shown once permission has been granted. This bug only affects Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 104.
- CVE-2020-26977Medium
By attempting to connect to a website using an unresponsive port, an attacker could control the content of a tab while the URL bar displayed the original domain. Affects Firefox for Android < 84.
- CVE-2020-26964Medium
Vulnerability in Firefox for Android related to the Remote Debugging via USB feature, which was enabled on Android versions prior to 6.0. Untrusted apps could connect to the feature and operate with browser privileges to read and interact with web content.
Original NVD description (English source)
When a malicious application installed on the user's device broadcast an Intent to Firefox for Android, arbitrary headers could have been specified, leading to attacks such as abusing ambient authority or session fixation. This was resolved by only allowing certain safe-listed headers. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 84.