CVE-2023-31045: backdropcms backdrop_cms
Vulnerability summary
CVE-2023-31045 is a medium (CVSS 4.8) vulnerability in backdropcms backdrop_cms. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 44.9% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 4.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Timeline
- 24-04-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
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."
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST4.8MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.53%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.53% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundBackdrop Issues
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, administrative account, user interaction (CVSS vector). Other conditions: not stated in public data.
Backdropcms1 product
- backdrop_cms< 1.24.2
1 vendor · 1 product
References
2 links- github.com/backdrop/backdrop/releases/tag/1.24.2Release Notes