CVE-2025-54962Public exploitNetwork attack vector

Stored XSS via unvalidated profile-image upload

Published Aug 4, 2025 · Updated Aug 4, 2025

Unrestricted file upload in Thiago Alves OpenPLC Runtime 3 through 9cd8f1b allows remote authenticated users to host active content. The /edit-user profile-image handler preserves the submitted filename's final extension and saves the file under static without validating its type. Any authenticated account can place HTML or SVG at an unauthenticated /static URL, where opening it executes attacker-supplied JavaScript in a visitor's browser.

CVSS severity6.4
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Thiago Alves OpenPLC Runtime 3 through 9cd8f1b allows remote authenticated users to host active content. The /edit-user profile-image handler preserves the submitted filename's final extension and saves the file under static without validating its type. Any authenticated account can place HTML or SVG at an unauthenticated /static URL, where opening it executes attacker-supplied JavaScript in a visitor's browser.

The record

CVE
CVE-2025-54962
Published
Aug 4, 2025
Updated
Aug 4, 2025
Vendor
Thiago Alves
Product
OpenPLC Runtime
Classifications
CWE-434, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=0 <=9cd8f1b53a50f9d38708096bfc72bcbb1ef47343

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Thiago Alves · OpenPLC Runtimeversion=0 <=9cd8f1b53a50f9d38708096bfc72bcbb1ef47343

Published CVSS scores

6.4MITRECVSS: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 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-434Unrestricted Upload of File with Dangerous Type
T1059.007Command and Scripting Interpreter: JavaScript/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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