CVE-2023-31045

Name: CVE-2023-31045
Creator: NVD / NIST
Published: 2023-04-24T08:15:07.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2023-31045 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

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."

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.54%

41.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Backdropcms	Backdrop Cms	< 1.24.2

References

https://github.com/backdrop/backdrop-issues/issues/6065Exploit, Issue Tracking, Vendor Advisory
https://github.com/backdrop/backdrop/releases/tag/1.24.2Release Notes
https://github.com/backdrop/backdrop-issues/issues/6065Exploit, Issue Tracking, Vendor Advisory
https://github.com/backdrop/backdrop/releases/tag/1.24.2Release Notes

Timeline

Published: Apr 24, 2023
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2023-31045?

How severe is CVE-2023-31045?

CVE-2023-31045 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2023-31045?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-31045?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST