CVE-2026-21290
8.7 · HIGHOverview
CVE-2026-21290 is a high-severity vulnerability affecting adobe commerce_b2b. It was published on March 11, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical 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 low-privileged attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field. A successful attacker can abuse this to achieve session takeover, increasing the confidentiality, and integrity impact to high. Exploitation of this issue requires user interaction in that a victim must browse to the page containing the vulnerable field.
Remediation
Check the references section for vendor advisories and patches from adobe. Update commerce_b2b to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| adobe | commerce_b2b | >= 0, < 1.3.3 | Affected |
| adobe | commerce | >= 0, < 2.4.4 | Affected |
| adobe | magento | >= 0, < 2.4.5 | Affected |
Frequently Asked Questions
What is CVE-2026-21290?
CVE-2026-21290 is a high-severity vulnerability affecting adobe commerce_b2b. It was published on March 11, 2026 and has a CVSS 3.1 base score of 8.7 (HIGH).
How severe is CVE-2026-21290?
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-21290?
Check the references section for vendor advisories and patches from adobe. Update commerce_b2b to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-21290?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-21290 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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