XSS in Backdropcms Backdrop Cms
CVE-2023-31045
A stored Cross-site scripting (XSS) issue in Text Editors and Formats in Backdrop CMS before 1.24.2 allows remote attackers to inject arbitrary web script or HTML via the name parameter. When a user is editing any content type (e.g., page, post, or card) as an admin, the stored XSS payload is executed upon selecting a malicious text formatting option. NOTE: the vendor disputes the security relevance of this finding because "any administrator that can configure a text format could easily allow Full HTML anywhere."
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/backdrop/backdrop/releases/tag/1.24.2 (Release Notes)
- github.com/backdrop/backdrop-issues/issues/6065 (Exploit, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-31045?
- CVE-2023-31045 is a medium-severity vulnerability in Backdropcms Backdrop Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-04-24.
- How severe is CVE-2023-31045?
- Medium severity. CVSS v3 base score is 4.8 out of 10.