CVE-2021-47788Public exploitNetwork attack vector

Authenticated code execution via dangerous language-file upload

Published Jan 15, 2026 · Updated Jan 15, 2026

Unrestricted file upload in WebsiteBaker 2.13.0 allows remote authenticated users to execute arbitrary server-side code. The language installation endpoint accepts manipulated installation parameters that permit a dangerous language file to be placed and processed as executable code. An account with language-editing permission is required, and successful exploitation grants code execution in the web server's context.

CVSS severity8.7
High
EPSS probability0.98%
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 WebsiteBaker 2.13.0 allows remote authenticated users to execute arbitrary server-side code. The language installation endpoint accepts manipulated installation parameters that permit a dangerous language file to be placed and processed as executable code. An account with language-editing permission is required, and successful exploitation grants code execution in the web server's context.

The record

CVE
CVE-2021-47788
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Website Baker Org e.V.
Product
WebsiteBaker CMS
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 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=2.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Website Baker Org e.V. · WebsiteBaker CMSversion=2.13.0

Published CVSS scores

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
8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

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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

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Your stack

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