CVE-2023-3169Known exploitationPublic exploitNetwork attack vector

Unauthenticated stored XSS via unchecked REST CSS write

Published Sep 11, 2023 · Updated Sep 26, 2024

Stored XSS in tagDiv Composer before 4.2 allows remote attackers to inject scripts through an unauthenticated WordPress REST request. The tdw/save_css route accepts the compiled_css parameter without authorization or validation and stores it for unescaped output in frontend pages. Loading an affected page executes the stored script in a visitor's browser, enabling content modification and browser-session abuse in that site's origin.

CVSS severity6.1
Medium
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in tagDiv Composer before 4.2 allows remote attackers to inject scripts through an unauthenticated WordPress REST request. The tdw/save_css route accepts the compiled_css parameter without authorization or validation and stores it for unescaped output in frontend pages. Loading an affected page executes the stored script in a visitor's browser, enabling content modification and browser-session abuse in that site's origin.

The record

CVE
CVE-2023-3169
Published
Sep 11, 2023
Updated
Sep 26, 2024
Vendor
tagDiv
Product
tagDiv Composer
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record 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 <4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

tagDiv · tagDiv Composerversion=0 <4.2

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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