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CVE-2023-23913

MEDIUM
6.3
CVSS Score
Published: January 9, 2025 at 12:33 AM UTC
Updated: June 17, 2026 at 05:38 AM UTC
1 product affected across 1 vendorRails Ujs

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

There is a potential DOM based cross-site scripting issue in rails-ujs which leverages the Clipboard API to target HTML elements that are assigned the contenteditable attribute. This has the potential to occur when pasting malicious HTML content from the clipboard that includes a data-method, data-remote or data-disable-with attribute.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Rails Ujs· Rails
60%
v < 6.1.7.3v < 7.0.4.3
Vendor states this is fixed in 5.1.0 (unaffected)
Affected range stops below 6.1.7.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.0.4.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: [email protected]
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1033263
Source: [email protected]
https://discuss.rubyonrails.org/t/cve-2023-23913-dom-based-cross-site-scripting-in-rails-ujs-for-contenteditable-html-elements/82468
Source: [email protected]
https://github.com/rails/rails/commit/5037a13614d71727af8a175063bcf6ba1a74bdbd
Source: [email protected]
https://security.netapp.com/advisory/ntap-20240605-0007/
Source: [email protected]
https://www.debian.org/security/2023/dsa-5389

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-79

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