CVE-2026-84220Network attack vectorHinoki check available

Unauthenticated shortcode execution via unfiltered comment rendering

Published Oct 9, 2026 · Updated Oct 9, 2026

Shortcode injection in Themeum Kirki before 6.3.2 allows remote attackers to read private page fields via comments. Its Comments Collection renders comment content without preventing shortcode execution and includes comments regardless of moderation status. Exploitation requires attacker-controlled comments to reach that renderer; execution is limited to registered site shortcodes, including access to private custom fields of the viewed page.

CVSS severity4.8
Medium
EPSS probability0.15%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Shortcode injection in Themeum Kirki before 6.3.2 allows remote attackers to read private page fields via comments. Its Comments Collection renders comment content without preventing shortcode execution and includes comments regardless of moderation status. Exploitation requires attacker-controlled comments to reach that renderer; execution is limited to registered site shortcodes, including access to private custom fields of the viewed page.

The record

CVE
CVE-2026-84220
Published
Oct 9, 2026
Updated
Oct 9, 2026
Vendor
Themeum
Product
Kirki
Classifications
CWE-74
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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=0 <6.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Themeum · Kirkiversion=0 <6.3.2

Published CVSS scores

4.8WPScanCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

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