Critical severity · published Aug 25, 2026
CVE-2026-80138
ClipBucket V5 5.5.1 through 5.5.3-#153 OS Command Injection via Installer php_cli_filepath Parameter
9.8
CVSS
1.2%
EPSS
No
On KEV
Description
ClipBucket V5's web installer fails to properly validate or escape the php_cli_filepath parameter before passing it to shell execution. Unauthenticated attackers can submit a crafted POST request to the installer with a malicious php_cli_filepath value to execute arbitrary commands as the web server user.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
clipbucket-v5 · MacWarrior
5.5.1 through 5.5.3-#153 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80138
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-80138
github.com
https://github.com/MacWarrior/clipbucket-v5
github.com
https://github.com/MacWarrior/clipbucket-v5/blob/5.5.3-%23153/upload/cb_install/functions_install.php
github.com
https://github.com/MacWarrior/clipbucket-v5/blob/5.5.3-%23153/upload/includes/classes/system.class.php
github.com
https://github.com/MacWarrior/clipbucket-v5/commit/36e7c6cfd81f62a091d2aeef96a8fc2fc2d85dc4
www.vulncheck.com
https://www.vulncheck.com/advisories/clipbucket-v5-5.5.1-through-5.5.3-153-os-command-injection-via-installer-php-cli-filepath-parameter
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