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Back to active CVEs
High · CVSS 7.1CVE-2026-77115

Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS via UTM ParametersCVE-2026-77115

Answer in brief

CVE-2026-77115 records a High severity (CVSS 7.1) vulnerability in Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS via UTM Parameters. The current sources do not mark it as known exploited. The current feed maps Unknown/Brave (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 23, 2026Updated Aug 26, 2026Source checked Oct 7, 2026First seen by HOL Aug 23, 2026Material review Aug 26, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/Brave (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Unknown/Bravegeneric>=0 <0.8.60.8.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Brave.
  2. 2Review the reported fix. Update Unknown/Brave to 0.8.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 23, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 23, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

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

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Kirki – Freeform Page Builder, Website Builder & Customizer <= 6.3.1 - Unauthenticated Stored Cross-Site Scripting via Registration MetadataAlso CWE-79
  • Envira Gallery < 1.16.1 - Author+ Stored XSS via Gallery Image IDAlso CWE-79
  • Envira Gallery < 1.16.1 - Author+ Stored XSS via Gallery Crop DimensionsAlso CWE-79
  • Magee Shortcodes <= 2.1.1 - Reflected XSS via live_preview and magee_create_shortcode ActionsAlso CWE-79
  • If-So Dynamic Content 1.4.4 - 1.10.1 - Reflected XSS via 'message' ParameterAlso CWE-79
  • OMGF | GDPR/DSGVO Compliant, Faster Google Fonts. Easy. <= 6.3.10 - Unauthenticated Stored Cross-Site Scripting via 's' Search Parameter in comments-atom FeedAlso CWE-79

Record context

Vulnerability class
XSS
EPSS
Not reported
CWE IDs
CWE-79
Source
CVE List V5
Source checked
Oct 7, 2026
References
1 linked source
Open source record