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CVE-2023-31045

18
FAUCET Score

CVE-2023-31045 describes a stored Cross-site Scripting (XSS) vulnerability in Backdrop CMS versions prior to 1.24.2, specifically affecting Text Editors and Formats. An authenticated administrator can inject malicious web script or HTML via the 'name' parameter, which executes when another administrator selects a crafted text formatting option. This vulnerability has a CVSS score of 4.8 (Medium), indicating a network-based attack with low complexity requiring high privileges and user interaction, leading to low impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.24.2CPE matchmatch criteria
cpe:2.3:a:backdropcms:backdrop_cms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 66th percentile among its peer group of 4,937 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: backdrop/backdropFixed in: 1.24.2
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-3862-c622-v4fpmedium

Cross-site Scripting in Backdrop CMS

Apr 24, 2023

References

github.com / backdrop/backdrop-issues/issues/6065
ExploitIssue TrackingVendor Advisory
github.com / backdrop/backdrop/releases/tag/1.24.2
Release Notes