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CVE-2024-21504

19
FAUCET Score

CVE-2024-21504 is a Cross-site Scripting (XSS) vulnerability affecting Livewire versions 3.3.5 through 3.4.8, where an attacker can inject malicious HTML via a crafted URL when the application uses the [Url] property. This medium-severity vulnerability (CVSS 6.1) requires user interaction to click a malicious link, potentially leading to client-side data compromise. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.3.5, <= 3.4.9CPE matchmatch criteria
cpe:2.3:a:laravel:livewire:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 43rd percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: livewire/livewireFixed in: 3.4.9
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-389c-cf87-qmwjmedium

Cross-site Scripting in livewire/livewire

Mar 19, 2024

References

github.com / livewire/livewire/commit/c65b3f0798ab2c9338213ede3588c3cdf4e6fcc0
Patch
github.com / livewire/livewire/pull/8117
Issue TrackingPatch
github.com / livewire/livewire/releases/tag/v3.4.9
Release Notes
security.snyk.io / vuln/SNYK-PHP-LIVEWIRELIVEWIRE-6446222
ExploitThird Party Advisory