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TI-2020-16378 Aliases CVE-2020-26955GHSA-xvpg-g5h6-mqww

When a user downloaded a file in Firefox for Android, if a cookie is set, it would have…

Priority LOW 30CWE-565Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00833 57th percentileScored 2026-11-07
Fix Fixed Firefox (Mozilla): 83

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefoxbefore 8383Patch availableCNA
  • Firefox VendorMozilla Affected before 83 Fixed in 83 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:android:*:*before 83.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:android:*:* Versions before 83.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox (Mozilla) Fixed in 83

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-26955
  2. 2026-10-03 Alias added: GHSA-xvpg-g5h6-mqww

References

Advisory 2

  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2022-09831 Use after free in Mozilla Firefox KEVCVSS 3.1HIGH 8.8
  • TI-2023-13905 Race condition in Mozilla Firefox for Android CVSS 3.1HIGH 7.5
  • TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization… CVSS 3.1MEDIUM 6.5
  • TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they… CVSS 3.1MEDIUM 6.5
  • TI-2022-13642 Information disclosure in Mozilla Firefox for iOS CVSS 3.1MEDIUM 6.5
See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences