How severe is CVE-2023-31541?

CVE-2023-31541 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-31541 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31541?

CVE-2023-31541 affects Ckeditor. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31541?

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

When was CVE-2023-31541 published?

CVE-2023-31541 was published on 2023-06-13 and last updated on 2026-07-05.

CVE-2023-31541

CVE-2023-31541 is a critical-severity vulnerability in Ckeditor with a CVSS 3.x base score of 9.8. 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Ckeditor
Published: 2023-06-13
Last modified: 2026-07-05

Description

A unrestricted file upload vulnerability was discovered in the ‘Browse and upload images’ feature of the CKEditor v1.2.3 plugin for Redmine, which allows arbitrary files to be uploaded to the server.

Frequently asked questions

What is CVE-2023-31541?: A unrestricted file upload vulnerability was discovered in the ‘Browse and upload images’ feature of the CKEditor v1.2.3 plugin for Redmine, which allows arbitrary files to be uploaded to the server.
How severe is CVE-2023-31541?: CVE-2023-31541 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-31541 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31541?: CVE-2023-31541 affects Ckeditor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31541?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-31541 published?: CVE-2023-31541 was published on 2023-06-13 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:ckeditor:ckeditor:1.2.3:*:*:*:*:redmine:*:*

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