Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://bugzilla.mozilla.org/show_bug.cgi?id=2051115
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-100/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-97/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-101/
security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2026-103/
security@mozilla.org