CVE-2023-53911Public exploitNetwork attack vectorHinoki check available

Authenticated script execution via unneutralized article excerpts

Published Dec 17, 2025 · Updated Dec 17, 2025

Stored XSS in Textpattern CMS 4.8.8 allows remote authenticated users to run JavaScript in other users' browsers via article excerpts. The article editor stores an Excerpt value containing a closing quote and script element, then renders it without neutralizing the markup. An authenticated content editor must save the payload and another user must view the article, exposing data and actions available to that viewer's session.

CVSS severity5.1
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in Textpattern CMS 4.8.8 allows remote authenticated users to run JavaScript in other users' browsers via article excerpts. The article editor stores an Excerpt value containing a closing quote and script element, then renders it without neutralizing the markup. An authenticated content editor must save the payload and another user must view the article, exposing data and actions available to that viewer's session.

The record

CVE
CVE-2023-53911
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
Textpattern
Product
Textpattern CMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 17, 2025Record 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=4.8.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Textpattern · Textpattern CMSversion=4.8.8

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/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 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 exploitPublished

Weakness, pattern, technique

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

Public exploit references

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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