XSS in Adobe Commerce
CVE-2026-21291
Adobe Commerce versions 2.4.9-alpha3, 2.4.8-p3, 2.4.7-p8, 2.4.6-p13, 2.4.5-p15, 2.4.4-p16 and earlier are affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a high-privileged attacker to inject malicious scripts into vulnerable form fields. Exploitation of this issue requires user interaction in that a victim must browse to the page containing the vulnerable field.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Adobe Commerce — versions 0
- Adobe Commerce B2b
- Adobe Commerce — versions 2.4.4, 2.4.5, 2.4.6
- Adobe Commerce B2b — versions 1.3.3, 1.3.4, 1.3.5
- Adobe Magento — versions 2.4.5, 2.4.6, 2.4.7
- Adobe Magento Open Source
Weakness classification (CWE)
References
- helpx.adobe.com/security/products/magento/apsb26-05.html (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-21291?
- CVE-2026-21291 is a medium-severity vulnerability in Adobe Commerce, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-03-11.
- How severe is CVE-2026-21291?
- Medium severity. CVSS v3 base score is 4.8 out of 10.