CVE-2021-47711: A SQL injection vulnerability in Kentico Xperience allows authenticated editors to inject malicious SQL querie

Q: How do I fix CVE-2021-47711?

xperience: upgrade to newer than 13.0.52. Exact commands for each OS are on this page.

Q: Is CVE-2021-47711 being exploited?

CVE-2021-47711 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-47711 affect?

CVE-2021-47711 affects xperience. Severity is high (CVSS 8.8). 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 explo

Routine

HIGH 8.8UPGRADE

CVE-2021-47711 is a high-severity flaw (CVSS 8.8) affecting xperience. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-89
Published	2025-12-18
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: kentico

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-18 20:15 UTCPublished CVE record published
2026-06-17 04:18 UTCUpdated Record last modified

kentico xperience UPGRADE

Affected: <= 13.0.52

Fixed in: newer than 13.0.52

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xperience || rpm -q xperience || xperience --version

2. UPGRADE to newer than 13.0.52 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xperience

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xperience

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-47711?

xperience: upgrade to newer than 13.0.52. Exact commands for each OS are on this page.

Is CVE-2021-47711 being exploited?

CVE-2021-47711 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-47711 affect?

CVE-2021-47711 affects xperience. Severity is high (CVSS 8.8). 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 explo

How urgent is CVE-2021-47711?

Priority 36/100. High severity

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References

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