Reflected XSS Vulnerability in Brave Popup Builder by Brave
CVE-2026-77115
Currently unrated
Key Information:
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👾 Exploit Exists🟡 Public PoC
What is CVE-2026-77115?
The Brave Popup Builder plugin allows for the reflection of UTM query parameters into the popup form HTML without proper escaping. This vulnerability can be exploited by attackers to execute malicious scripts in the context of the user's browser, potentially leading to unauthorized actions or data exposure.
Affected Version(s)
Brave 0 < 0.8.6
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.