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CVE-2026-65946MediumCVSS 6.1CVE published 29 July 2026Added to mySites.guru 28 July 2026

RO CSVI (com_csvi) below 9.11.0 - Authenticated Path Traversal in File Upload, PHP Object Injection, Missing CSRF and Stored XSS

RO CSVI (formerly CSVI Pro / CSVI Free) is a backend import and export component for Joomla, VirtueMart, HikaShop and J2Commerce. The 9.11.0 release of 28 July 2026 is a security release, and the vendor states that all versions prior to 9.11.0 are affected. Four classes of flaw were fixed. (1) Path traversal in file upload handling: uploaded filenames were not contained, so an import file could be written outside the intended folder; 9.11.0 sanitises filenames used for storing uploaded files. (2) PHP Object Injection: the codebase used serialize/unserialize on stored data, including ICEcat processing, and was changed throughout to json_encode/json_decode - unserialize on attacker-influenced data allows object injection and, with a suitable gadget chain, code execution. (3) Missing CSRF checks on the About page AJAX buttons and on the retrieval of column headers, so a logged-in administrator could be made to trigger those actions from an attacker-controlled page. (4) XSS when loading rule forms, fixed by returning proper JSON from AJAX calls and escaping output; the full pathname was also disclosed on the About page when fixing folders. All of these require a backend session with access to the component, so exploitation is authenticated - but com_csvi is routinely granted to Manager and Administrator level staff, and the object injection and path traversal both lead to code execution from that position. Update to RO CSVI 9.11.0 or later. Tracked as CVE-2026-65943 (unauthenticated directory creation, CVSS 3.1 7.5 High), CVE-2026-65944 (CSRF vectors in AJAX endpoint handlers, CVSS 3.1 8.8 High) and CVE-2026-65946 (XSS vectors in AJAX endpoint handlers, CVSS 3.1 6.1 Medium), all published 29 July 2026 and all fixed in 9.11.0.

Is my site affected?

Affected
RO CSVI before 9.11.0
Fixed in
9.11.0
What to do
Update RO CSVI to 9.11.0 or later.
Check whether your sites are affected

How CVE-2026-65946 is scored

The base metrics as CISA-ADP published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

6.1 Medium

CVSS 3.1, scored by CISA-ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

How it is reached

AV:N Attack vector
Network. Reachable across the internet
AC:L Attack complexity
Low. Nothing to work around, it just works
PR:N Privileges required
None. No account needed
UI:R User interaction
Required. Someone has to click or visit something
S:C Scope
Changed. The flaw reaches past the extension it is in

What it does

C:L Confidentiality
Low. Some data can be read
I:L Integrity
Low. Some data can be altered
A:N Availability
None. The site stays up

The rule below is rated High for the set of 3 CVEs it covers together, not for this record on its own.

Timeline

  1. 28 July 2026mySites.guru check added for RO CSVI (before 9.11.0)
  2. 29 July 2026CVE-2026-65946 record published by its CNA

Rule details

Other vulnerabilities in RO CSVI

Updating for CVE-2026-65946 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

RO CSVI

Latest safe version: 9.11.0

References

CVE-2026-65946 questions

Which versions are affected by CVE-2026-65946?
CVE-2026-65946 affects RO CSVI before 9.11.0. The fix is in 9.11.0.
How do I fix CVE-2026-65946?
Update RO CSVI to 9.11.0 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2026-65946?
CISA-ADP scores it 6.1 (Medium) under CVSS 3.1. In plain terms: reachable across the internet, no account needed and someone has to click or visit something.

Running an affected version on a site you manage?

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This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

Rules current as of 5 October 2026.