How severe is CVE-2023-4771?

CVE-2023-4771 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4771 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4771?

CVE-2023-4771 affects Cksource Ckeditor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4771?

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

When was CVE-2023-4771 published?

CVE-2023-4771 was published on 2023-11-16 and last updated on 2026-06-17.

CVE-2023-4771

CVE-2023-4771 is a medium-severity vulnerability in Cksource Ckeditor with a CVSS 3.x base score of 6.1. 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 6.1)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Cksource Ckeditor
Published: 2023-11-16
Last modified: 2026-06-17

Description

A Cross-Site scripting vulnerability has been found in CKSource CKEditor affecting versions 4.15.1 and earlier. An attacker could send malicious javascript code through the /ckeditor/samples/old/ajax.html file and retrieve an authorized user's information.

Frequently asked questions

What is CVE-2023-4771?: A Cross-Site scripting vulnerability has been found in CKSource CKEditor affecting versions 4.15.1 and earlier. An attacker could send malicious javascript code through the /ckeditor/samples/old/ajax.html file and retrieve an authorized user's information.
How severe is CVE-2023-4771?: CVE-2023-4771 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4771 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4771?: CVE-2023-4771 affects Cksource Ckeditor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4771?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4771 published?: CVE-2023-4771 was published on 2023-11-16 and last updated on 2026-06-17.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-vulnerability-cksource-ckeditor

Affected products (1)

cpe:2.3:a:cksource:ckeditor:*:*:*:*:*:wordpress:*:*

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