Arbitrary file upload in Ckeditor

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.

Vulnerability class: Unrestricted File Upload

EPSS: 0.014 (70.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ckeditor — versions 1.2.3
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-31541?: CVE-2023-31541 is a critical-severity vulnerability in Ckeditor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-06-13.
How severe is CVE-2023-31541?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-31541 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.