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Description

Vtiger CRM through 8.4.0 contains an authenticated remote code execution vulnerability in the admin module import feature that allows administrator-level attackers to upload arbitrary PHP files by submitting a crafted zip archive through the ModuleManager import function, which extracts contents directly into the modules/ directory under the web root without validating file types beyond the manifest.xml descriptor. Attackers can place executable PHP files in the modules/ directory that become directly accessible via HTTP, bypassing Vtiger's authentication and authorization layer entirely since Apache resolves the path and invokes the PHP interpreter before the application routing layer is involved, resulting in a persistent web shell independent of the originating session.

PUBLISHED Reserved 2026-01-14 | Published 2026-07-07 | Updated 2026-07-14 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Problem types

Unrestricted Upload of File with Dangerous Type

Product status

Default status
affected

Any version
affected

Credits

Jiva (JivaSecurity) finder

References

jivasecurity.com/.../vtiger-rce-module-import-cve-2026-23698 (Researcher Disclosure) technical-description exploit

www.vtiger.com/ (Project Homepage) product

www.vulncheck.com/...cated-rce-via-module-import-file-upload third-party-advisory

cve.org (CVE-2026-23698)

nvd.nist.gov (CVE-2026-23698)

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