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CVE-2020-26975

MEDIUM
6.5
CVSS Score
Published: January 7, 2021 at 01:52 PM UTC
Updated: August 19, 2026 at 03:29 PM UTC
2 products affected across 1 vendorFirefox MobileFirefox

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox Mobile· Mozilla
95%
v < 84.0
Affected range stops below 84.0, so it looks safe — our inference, not a vendor statement
Firefox· Mozilla
60%
v < 84
Affected range stops below 84, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPermissions Required
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1661071
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2020-54/

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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