CVE-2026-21448
Bagisto has Normal & Blind SSTI from low-privilege user when ordering product
Description
### Summary SSTI when normal customer orders any product in add address step can inject value run in admin view. ### Details `As normal user` 1. Go to `http://127.0.0.1:8000/` 2. Add order to cart and continue to checkout 3. In step of add address inject this value {{7*7}} in any input `As admin` 1. Go to `http://127.0.0.1:8000/admin/sales/orders` 2. And notice the vlaue appear in admin view 49 `As normal user` 3. Go to add address normally `http://127.0.0.1:8000/customer/account/addresses/create` and inject {{7*7}} on it and will notice it appear 49 <img width="1868" height="868" alt="image" src="https://github.com/user-attachments/assets/279627e9-6361-4d39-a500-0fc20e163d25" /> ### PoC - Video attached with the report: https://github.com/user-attachments/assets/a814b30c-a3e2-4a40-8644-336e21e60d0d ### Impact - Can lead to RCE
How to fix CVE-2026-21448
To remediate CVE-2026-21448, upgrade the affected package to a fixed version below.
- —upgrade to 2.3.10 or later
Is CVE-2026-21448 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.3.10
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P |
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |