CVE-2023-53909Public exploitNetwork attack vectorHinoki check available

Stored XSS via unsanitized SVG uploads

Published Dec 17, 2025 · Updated Dec 17, 2025

Stored cross-site scripting in WBCE CMS 1.6.1 allows remote authenticated users to run JavaScript by uploading a crafted SVG file. The media manager's connector.wbce.php endpoint accepts SVG content containing script tags and serves it without neutralizing the active content. A victim must access the uploaded file; the script then runs in that victim's browser context, enabling data access or actions permitted by the session.

CVSS severity5.4
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored cross-site scripting in WBCE CMS 1.6.1 allows remote authenticated users to run JavaScript by uploading a crafted SVG file. The media manager's connector.wbce.php endpoint accepts SVG content containing script tags and serves it without neutralizing the active content. A victim must access the uploaded file; the script then runs in that victim's browser context, enabling data access or actions permitted by the session.

The record

CVE
CVE-2023-53909
Published
Dec 17, 2025
Updated
Dec 17, 2025
Vendor
WBCE Project
Product
WBCE 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=1.6.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WBCE Project · WBCE CMSversion=1.6.1

Published CVSS scores

5.4NVDCVSS: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
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

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
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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