CVE-2026-0608Network attack vector

Authenticated stored XSS via unescaped post meta output

Published Jan 20, 2026 · Updated Jan 20, 2026

Stored cross-site scripting in Jeff Starr's Head Meta Data 20251118 and earlier allows remote authenticated users to inject web scripts. The plugin emits the head-meta-data post meta value verbatim into the page head without sanitizing the stored input or escaping the output. Contributor-level access is required, and the script runs in any visitor's browser when the affected post or page is viewed.

CVSS severity6.4
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Jeff Starr's Head Meta Data 20251118 and earlier allows remote authenticated users to inject web scripts. The plugin emits the head-meta-data post meta value verbatim into the page head without sanitizing the stored input or escaping the output. Contributor-level access is required, and the script runs in any visitor's browser when the affected post or page is viewed.

The record

CVE
CVE-2026-0608
Published
Jan 20, 2026
Updated
Jan 20, 2026
Vendor
Plugin Planet
Product
Head Meta Data
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 20, 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=* <=20251118

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Plugin Planet · Head Meta Dataversion=* <=20251118

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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.

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

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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