How severe is CVE-2026-21310?

CVE-2026-21310 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-21310 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21310?

CVE-2026-21310 primarily affects Adobe Commerce. In total, 183 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-21310?

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

Does CVE-2026-21310 have an EU (EUVD) identifier?

Yes. CVE-2026-21310 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11063.

When was CVE-2026-21310 published?

CVE-2026-21310 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-21310

CVE-2026-21310 is a medium-severity vulnerability in Adobe Commerce with a CVSS 3.x base score of 5.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11063
Weakness: CWE-20
Affected product: Adobe Commerce
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 an Improper Input Validation vulnerability that could result in a security feature bypass, with limited impact to integrity. Exploitation of this issue does not require user interaction.

Frequently asked questions

What is CVE-2026-21310?: 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 an Improper Input Validation vulnerability that could result in a security feature bypass, with limited impact to integrity. Exploitation of this issue does not require user interaction.
How severe is CVE-2026-21310?: CVE-2026-21310 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-21310 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21310?: CVE-2026-21310 primarily affects Adobe Commerce. In total, 183 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-21310?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21310 have an EU (EUVD) identifier?: Yes. CVE-2026-21310 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11063.
When was CVE-2026-21310 published?: CVE-2026-21310 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:commerce:*:*:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:-:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p1:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p10:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p11:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p12:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p13:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p14:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p15:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p16:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p2:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p3:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p4:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p5:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p6:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p7:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p8:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.4:p9:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:-:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p1:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p10:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p11:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p12:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p13:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p14:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p15:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p2:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p3:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p4:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p5:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p6:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p7:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p8:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.5:p9:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:-:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:p1:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:p10:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:p11:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:p12:*:*:*:*:*:*
cpe:2.3:a:adobe:commerce:2.4.6:p13:*:*:*:*:*:*

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