Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Maho (Packagist package mahocommerce/maho) versions before 25.9.0 are affected. A staff user with the Dashboard and Catalog Manage Products permissions can define a file upload custom option on a product and allow the `.php` extension, bypassing the normal upload restrictions. The uploaded file is stored in a predictable path under the webroot, so requesting it over HTTP can run it and achieve remote code execution. Upgrade to Maho 25.9.0 or later, which is the listed fixed version.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.7 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0031, the 23rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:03 UTC First seen by agentprime
- 31 Oct 2026, 14:03 UTC Confirmed by OSV