CVE-2023-53971Public exploitNetwork attack vector

Authenticated code execution via unrestricted chat photo upload

Published Dec 22, 2025 · Updated Dec 22, 2025

Unrestricted file upload in webTareas 2.4 allows remote authenticated users to execute arbitrary PHP code through the chat photo feature. The chattab_serv.php endpoint accepts a chatPhotos0 upload presented as image/png without rejecting a PHP filename and stores it under the web-accessible /files/Messages/ path. Any authenticated account with member-forum chat access can request the returned file path, causing the web server to interpret the uploaded payload as PHP.

CVSS severity8.7
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Unrestricted file upload in webTareas 2.4 allows remote authenticated users to execute arbitrary PHP code through the chat photo feature. The chattab_serv.php endpoint accepts a chatPhotos0 upload presented as image/png without rejecting a PHP filename and stores it under the web-accessible /files/Messages/ path. Any authenticated account with member-forum chat access can request the returned file path, causing the web server to interpret the uploaded payload as PHP.

The record

CVE
CVE-2023-53971
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
webTareas Project
Product
webTareas
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

webTareas Project · webTareasversion=2.4

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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 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
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo