CVE-2026-84819Network attack vector

Unauthenticated browser script execution via unsanitized block colors

Published Sep 10, 2026 · Updated Sep 10, 2026

Cross-site scripting in Greg Winiarski WPAdverts 2.3.3 and earlier allows remote attackers to execute browser script via block color values. The block color path accepted custom HEX values without sanitizing them before incorporating them into rendered block output. No authentication is required; published material does not identify the exposed request parameter, persistence behavior, or required victim interaction.

CVSS severityUnavailable
Unscored
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Greg Winiarski WPAdverts 2.3.3 and earlier allows remote attackers to execute browser script via block color values. The block color path accepted custom HEX values without sanitizing them before incorporating them into rendered block output. No authentication is required; published material does not identify the exposed request parameter, persistence behavior, or required victim interaction.

The record

CVE
CVE-2026-84819
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Greg Winiarski
Product
WPAdverts
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=2.3.3 changes=[{"at":"2.3.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Greg Winiarski · WPAdvertsversion=n/a <=2.3.3 changes=[{"at":"2.3.4","status":"unaffected"}]

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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