CVE-2026-8040Network attack vector

Stored XSS via unescaped color shortcode attribute

Published May 27, 2026 · Updated May 27, 2026

Stored XSS in yehudah faq shortocde 1.0 and earlier allows remote authenticated users to inject scripts through the faq shortcode. The faq shortcode handler accepts the color attribute and inserts it into generated page markup without sufficient sanitization or output escaping. Contributor-level access is required, and the stored script executes in a visitor's browser whenever the injected page is opened.

CVSS severity6.4
Medium
EPSS probability0.19%
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 yehudah faq shortocde 1.0 and earlier allows remote authenticated users to inject scripts through the faq shortcode. The faq shortcode handler accepts the color attribute and inserts it into generated page markup without sufficient sanitization or output escaping. Contributor-level access is required, and the stored script executes in a visitor's browser whenever the injected page is opened.

The record

CVE
CVE-2026-8040
Published
May 27, 2026
Updated
May 27, 2026
Vendor
yehudah
Product
faq shortocde
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 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 <=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

yehudah · faq shortocdeversion=0 <=1.0

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.

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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
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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