CVE-2023-48003

FAUCET Score

CVE-2023-48003 is an open redirect vulnerability affecting Asp.Net Zero versions prior to 12.3.0, allowing attackers to redirect users to arbitrary URLs through HTML injection in WebSocket messages. Rated Medium severity (CVSS 6.1), it requires user interaction and could lead to phishing or credential theft. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 12.3.0CPE matchmatch criteria	cpe:2.3:a:aspnetzero:asp.net_zero::::::::

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

0.46%

Probability of exploitation in next 30 days

EPSS Percentile

37.4%

Percentile rank of EPSS score among Peer Group

As of 2026-07-25

Model: v2026.06.15

This CVE's current EPSS score of 0.0046 is in the 39th percentile among its peer group of 26,209 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

Remediation records are not available for this CVE.

References

docs.unsafe-inline.com / 0day/asp.net-zero-v12.3.0-html-injection-leads-to-open-redirect-via-websockets-cve-2023-48003

ExploitThird Party Advisory

github.com / passtheticket/vulnerability-research/blob/main/aspnetzero_html_injection_via_websockets_messages.md

ExploitThird Party Advisory