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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 0 LOW 2

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 2 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 1 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 1 SQL injection 0

Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 1 No user interaction 1

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Weakness (CWE) CWE-639 Authorization Bypass Through User-Controlled Key 1 CWE-79 Improper Neutralization of Input During Web Page Generation 1

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Release: Brave 0.8.6 × Clear all filters

TI-2026-53860 CVE-2026-77116 · GHSA-3pv4-5j2g-fvvj

Brave Popup Builder < 0.8.6 - Subscriber+ Unpublished Popup Disclosure via Preview

Priority LOW 20

Brave Popup Builder (slug: brave-popup-builder) has a broken access control issue in versions through 0.8.5.

CVSS 3.1MEDIUM 4.3· Network · Low privileges · No interaction · EPSS 0.0027 · Published 2026-08-23 · Fixed in 0.8.6 CWE-639

TI-2026-53859 CVE-2026-77115 · GHSA-x2v4-r59f-8jxr

Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters

Priority LOW 31

Brave Popup Builder (brave-popup-builder) up to version 0.8.5 reflects UTM query parameters into popup form HTML without escaping them.

CVSS 3.1HIGH 7.1· Network · No auth · User interaction · EPSS 0.00251 · Published 2026-08-23 · Fixed in 0.8.6 CWE-79

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