CVE-2026-22209Network attack vector

Stored XSS via unescaped custom CSS

Published Mar 13, 2026 · Updated Mar 13, 2026

Stored cross-site scripting in gVectors Team wpDiscuz before 7.6.47 allows remote authenticated users to execute JavaScript in browsers. The customCss setting is emitted inside a style element without neutralizing an attacker-supplied closing style tag, so following script markup enters the page DOM. Administrator access to the WordPress settings panel is required, and the injected script runs when visitors load affected pages.

CVSS severity5.1
Medium
EPSS probability0.22%
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 gVectors Team wpDiscuz before 7.6.47 allows remote authenticated users to execute JavaScript in browsers. The customCss setting is emitted inside a style element without neutralizing an attacker-supplied closing style tag, so following script markup enters the page DOM. Administrator access to the WordPress settings panel is required, and the injected script runs when visitors load affected pages.

The record

CVE
CVE-2026-22209
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
AdvancedCoding
Product
wpDiscuz
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 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 <7.6.47

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

AdvancedCoding · wpDiscuzversion=0 <7.6.47

Published CVSS scores

4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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