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Description

Cyberfox Web Browser 52.9.1 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the search bar with excessive data. Attackers can generate a 9,000,000 byte payload and paste it into the search bar to trigger an application crash.

PUBLISHED Reserved 2026-01-14 | Published 2026-01-15 | Updated 2026-01-15 | Assigner VulnCheck




MEDIUM: 6.7CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

Allocation of Resources Without Limits or Throttling

Product status

52.9.1 (Possibly all versions)
affected

Credits

Aryan Chehreghani finder

References

www.exploit-db.com/exploits/50336 (ExploitDB-50336) exploit

web.archive.org/...035057/https://cyberfox.8pecxstudios.com/ (Archived Cyberfox Web Browser Homepage) product

cve.org (CVE-2021-47784)

nvd.nist.gov (CVE-2021-47784)

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