How severe is CVE-2021-21445?

CVE-2021-21445 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-21445 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21445?

CVE-2021-21445 primarily affects Sap Commerce Cloud. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-21445?

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

When was CVE-2021-21445 published?

CVE-2021-21445 was published on 2021-01-12 and last updated on 2026-06-17.

CVE-2021-21445

CVE-2021-21445 is a medium-severity vulnerability in Sap Commerce Cloud with a CVSS 3.x base score of 5.4. 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-444.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-444
Affected product: Sap Commerce Cloud
Published: 2021-01-12
Last modified: 2026-06-17

Description

SAP Commerce Cloud, versions - 1808, 1811, 1905, 2005, 2011, allows an authenticated attacker to include invalidated data in the HTTP response Content Type header, due to improper input validation, and sent to a Web user. A successful exploitation of this vulnerability may lead to advanced attacks, including cross-site scripting and page hijacking.

Frequently asked questions

What is CVE-2021-21445?: SAP Commerce Cloud, versions - 1808, 1811, 1905, 2005, 2011, allows an authenticated attacker to include invalidated data in the HTTP response Content Type header, due to improper input validation, and sent to a Web user. A successful exploitation of this vulnerability may lead to advanced attacks, including cross-site scripting and page hijacking.
How severe is CVE-2021-21445?: CVE-2021-21445 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-21445 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21445?: CVE-2021-21445 primarily affects Sap Commerce Cloud. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-21445?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21445 published?: CVE-2021-21445 was published on 2021-01-12 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:sap:commerce_cloud:1808:*:*:*:*:*:*:*
cpe:2.3:a:sap:commerce_cloud:1811:*:*:*:*:*:*:*
cpe:2.3:a:sap:commerce_cloud:1905:*:*:*:*:*:*:*
cpe:2.3:a:sap:commerce_cloud:2005:*:*:*:*:*:*:*
cpe:2.3:a:sap:commerce_cloud:2011:*:*:*:*:*:*:*

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