CVE-2026-4852Network attack vector

Stored XSS via unsanitized image source field

Published Apr 20, 2026 · Updated Apr 20, 2026

Stored XSS in Image Source Control Lite 3.9.1 and earlier allows remote authenticated users to inject scripts via image source metadata. The Image Source attachment field accepts HTML without sufficient input sanitization, and the plugin renders the saved source text without adequate output escaping. Author-level access is required; the injected script executes in visitors' browsers when an affected page displays the stored image credit.

CVSS severity6.4
Medium
EPSS probability0.15%
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 Image Source Control Lite 3.9.1 and earlier allows remote authenticated users to inject scripts via image source metadata. The Image Source attachment field accepts HTML without sufficient input sanitization, and the plugin renders the saved source text without adequate output escaping. Author-level access is required; the injected script executes in visitors' browsers when an affected page displays the stored image credit.

The record

CVE
CVE-2026-4852
Published
Apr 20, 2026
Updated
Apr 20, 2026
Vendor
webgilde GmbH
Product
Image Source Control Lite – Show Image Credits and Captions
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 20, 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 <=3.9.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

webgilde GmbH · Image Source Control Lite – Show Image Credits and Captionsversion=0 <=3.9.1

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.

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 exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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