How severe is CVE-2021-47856?

CVE-2021-47856 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-47856 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47856?

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

Does CVE-2021-47856 have an EU (EUVD) identifier?

Yes. CVE-2021-47856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34764.

When was CVE-2021-47856 published?

CVE-2021-47856 was published on 2026-02-01 and last updated on 2026-06-17.

CVE-2021-47856

CVE-2021-47856 is a medium-severity vulnerability with a CVSS 3.x base score of 6.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-34764
Weakness: CWE-79
Published: 2026-02-01
Last modified: 2026-06-17

Description

Easy Cart Shopping Cart 2021 contains a non-persistent cross-site scripting vulnerability in the search module's keyword parameter. Remote attackers can inject malicious script code through the search input to compromise user sessions and manipulate application content.

Frequently asked questions

What is CVE-2021-47856?: Easy Cart Shopping Cart 2021 contains a non-persistent cross-site scripting vulnerability in the search module's keyword parameter. Remote attackers can inject malicious script code through the search input to compromise user sessions and manipulate application content.
How severe is CVE-2021-47856?: CVE-2021-47856 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-47856 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2021-47856?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-47856 have an EU (EUVD) identifier?: Yes. CVE-2021-47856 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-34764.
When was CVE-2021-47856 published?: CVE-2021-47856 was published on 2026-02-01 and last updated on 2026-06-17.

References

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