How severe is CVE-2026-21291?

CVE-2026-21291 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-21291 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21291?

CVE-2026-21291 primarily affects Adobe Magento. In total, 183 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-21291?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21291 have an EU (EUVD) identifier?

Yes. CVE-2026-21291 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11047.

When was CVE-2026-21291 published?

CVE-2026-21291 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-21291

CVE-2026-21291 is a medium-severity vulnerability in Adobe Magento with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11047
Weakness: CWE-79
Affected product: Adobe Magento
Published: 2026-03-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-21291?: CVE-2026-21291 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-21291 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21291?: CVE-2026-21291 primarily affects Adobe Magento. In total, 183 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-21291?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21291 have an EU (EUVD) identifier?: Yes. CVE-2026-21291 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11047.
When was CVE-2026-21291 published?: CVE-2026-21291 was published on 2026-03-11 and last updated on 2026-06-17.

References

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

Affected products (183)

cpe:2.3:a:adobe:magento:*:*:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:-:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p1:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p10:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p11:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p12:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p13:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p14:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p15:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p2:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p3:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p4:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p5:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p6:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p7:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p8:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.5:p9:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:-:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p1:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p10:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p11:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p12:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p13:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p2:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p3:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p4:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p5:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p6:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p7:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p8:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.6:p9:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:-:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:b1:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:b2:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:beta3:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:p1:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:p2:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:p3:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:p4:*:*:open_source:*:*:*
cpe:2.3:a:adobe:magento:2.4.7:p5:*:*:open_source:*:*:*

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