How severe is CVE-2021-47711?

CVE-2021-47711 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-47711 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47711?

CVE-2021-47711 affects Kentico Xperience. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-47711?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2021-47711 have an EU (EUVD) identifier?

Yes. CVE-2021-47711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204369.

When was CVE-2021-47711 published?

CVE-2021-47711 was published on 2025-12-18 and last updated on 2026-06-17.

CVE-2021-47711

CVE-2021-47711 is a high-severity vulnerability in Kentico Xperience with a CVSS 3.x base score of 8.8. 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-89.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.7
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204369
Weakness: CWE-89
Affected product: Kentico Xperience
Published: 2025-12-18
Last modified: 2026-06-17

Description

A SQL injection vulnerability in Kentico Xperience allows authenticated editors to inject malicious SQL queries via online marketing macro method parameters. This enables unauthorized database access and potential data manipulation by exploiting macro method input validation weaknesses.

Frequently asked questions

What is CVE-2021-47711?: A SQL injection vulnerability in Kentico Xperience allows authenticated editors to inject malicious SQL queries via online marketing macro method parameters. This enables unauthorized database access and potential data manipulation by exploiting macro method input validation weaknesses.
How severe is CVE-2021-47711?: CVE-2021-47711 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-47711 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47711?: CVE-2021-47711 affects Kentico Xperience. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-47711?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2021-47711 have an EU (EUVD) identifier?: Yes. CVE-2021-47711 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204369.
When was CVE-2021-47711 published?: CVE-2021-47711 was published on 2025-12-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:kentico:xperience:*:*:*:*:*:*:*:*

More vulnerabilities in Kentico Xperience

CVE-2025-2747 — Critical (CVSS 9.8): An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server…
CVE-2025-2746 — Critical (CVSS 9.8): An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server…
CVE-2019-10068 — Critical (CVSS 9.8): An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x…
CVE-2017-17736 — Critical (CVSS 9.8): Kentico 9.0 before 9.0.51 and 10.0 before 10.0.48 allows remote attackers to obtain Global Administrator access by…
CVE-2019-12102 — Critical (CVSS 9.1): Kentico 11 through 12 lets attackers upload and explore files without authentication via the…
CVE-2019-25229 — High (CVSS 8.8): An unrestricted file upload vulnerability in Kentico Xperience allows authenticated users with 'Read data' permissions…

All CVEs affecting Kentico Xperience →

Other CWE-89 (SQL Injection) vulnerabilities

CVE-2026-54350 — Critical (CVSS 10.0): Budibase is an open-source low-code platform. Prior to 3.39.12, an unauthenticated visitor of any published Budibase…
CVE-2026-8054 — Critical (CVSS 10.0): Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in the Publish Audit API endpoints…
CVE-2026-42287 — Critical (CVSS 10.0): Emlog is an open source website building system. Prior to version 2.6.11, direct SQL injection in article creation and…
CVE-2026-3325 — Critical (CVSS 10.0): SQL injection (SQLi) in MegaCMS v12.0.0, specifically in the “id_territorio” parameter of the…
CVE-2025-10878 — Critical (CVSS 10.0): A SQL injection vulnerability exists in the login functionality of Fikir Odalari AdminPando 1.0.1 before 2026-01-26.…
CVE-2025-57792 — Critical (CVSS 10.0): Explorance Blue versions prior to 8.14.9 contain a SQL injection vulnerability caused by insufficient validation of…

Browse all CWE-89 (SQL Injection) vulnerabilities →