CVE-2026-14835Network attack vector

Contributor-level stored XSS via unescaped metabox scripts

Published Aug 30, 2026 · Updated Aug 30, 2026

Stored XSS in SOGO Add Script to Individual Pages Header Footer through 3.9 allows remote authenticated users to execute JavaScript. The post metabox saves custom header and footer script values without sanitizing or escaping them or requiring the unfiltered_html capability. Contributor-level access is sufficient; the payload runs when an administrator reviews the post and for any visitor after publication.

CVSS severityUnavailable
Unscored
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in SOGO Add Script to Individual Pages Header Footer through 3.9 allows remote authenticated users to execute JavaScript. The post metabox saves custom header and footer script values without sanitizing or escaping them or requiring the unfiltered_html capability. Contributor-level access is sufficient; the payload runs when an administrator reviews the post and for any visitor after publication.

The record

CVE
CVE-2026-14835
Published
Aug 30, 2026
Updated
Aug 30, 2026
Vendor
Sogo Digital
Product
SOGO Add Script to Individual Pages Header Footer
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 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 <=3.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sogo Digital · SOGO Add Script to Individual Pages Header Footerversion=0 <=3.9

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.

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-79Cross-Site Scripting (XSS)
T1059.007Command and Scripting Interpreter: JavaScript

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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