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Back to active CVEs
Medium · CVSS 4.8CVE-2026-81571

Brave Popup Builder < 0.8.8 - Unauthenticated Arbitrary Shortcode Execution via UTM ParameterCVE-2026-81571

Answer in brief

CVE-2026-81571 records a Medium severity (CVSS 4.8) vulnerability in Brave Popup Builder < 0.8.8 - Unauthenticated Arbitrary Shortcode Execution via UTM Parameter. 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 Sep 2, 2026Updated Sep 3, 2026Source checked Oct 17, 2026First seen by HOL Sep 2, 2026Material review Sep 3, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 4.8. 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 <0.8.80.8.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Unknown/Brave.
  2. 2Review the reported fix. Update Unknown/Brave to 0.8.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 2, 2026

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

  2. Source modified

    Sep 3, 2026

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

  3. First seen by HOL

    Sep 2, 2026

Sources and claim methodology

  • Source referencewpscan.com
Upstream source description

The Brave WordPress plugin before 0.8.8 does not prevent a URL parameter used to pre-fill a form field from being passed to WordPress's shortcode engine, allowing unauthenticated attackers to have arbitrary shortcodes registered on the site executed server-side.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress SMS Alert Order Notifications plugin <= 4.0.1 - Broken Access Control vulnerabilitySame generic ecosystem
  • phpMyFAQ 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta TOTP 2FA Bypass via SSO CallbacksSame generic ecosystem
  • phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Missing Current-Password Step-Up on E-mail Change Enables Account TakeoverSame generic ecosystem
  • phpMyFAQ 4.2.0-alpha before 4.2.0-beta Missing Authorization via deleteGroup APISame generic ecosystem
  • phpMyFAQ 4.2.0-alpha.2 before 4.2.0-beta 2FA Brute-Force via remove-twofactor EndpointSame generic ecosystem
  • phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Account Enumeration via Guest Comment EndpointSame generic ecosystem

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-74
Source
CVE List V5
Source checked
Oct 17, 2026
References
1 linked source
Open source record