CVE-2026-21291 — MEDIUM (4.8)

Q: How severe is CVE-2026-21291?

CVE-2026-21291 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-21291?

Check the references section above for vendor advisories and patch information. Affected products include: Adobe Commerce B2B, Adobe Commerce, Adobe Magento.

Vulnerability Description

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.

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Adobe	Commerce B2B	< 1.3.3
Adobe	Commerce	< 2.4.4
Adobe	Magento	< 2.4.5

Related Weaknesses (CWE)

CWE-79

References

https://helpx.adobe.com/security/products/magento/apsb26-05.htmlVendor Advisory

FAQ

What is CVE-2026-21291?

CVE-2026-21291 is a vulnerability with a CVSS score of 4.8 (MEDIUM). 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-p...

How severe is CVE-2026-21291?

CVE-2026-21291 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-21291?

Check the references section above for vendor advisories and patch information. Affected products include: Adobe Commerce B2B, Adobe Commerce, Adobe Magento.