CVE-2023-48003 - An open redirect through HTML injection in user messages in Asp.Net Zero before 12.3.0 allows remote attackers to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' in the WebSocket messages

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MEDIUM

An open redirect through HTML injection in user messages in Asp.Net Zero before 12.3.0 allows remote attackers to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' in the WebSocket messages

Published Dec 26, 2023

6.1

MEDIUM

CVSS 3.1

EPSS 0.46%

Description

An open redirect through HTML injection in user messages in Asp.Net Zero before 12.3.0 allows remote attackers to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' in the WebSocket messages.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.46% 0.00460

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.

EPSS probability 0.00460

Score over time

2023-2026

EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v3
EPSS v4
EPSS v5

Table of values (6 key points)

Flat stretches are collapsed. Showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 4, 2026	0.46% (0.00460)	37.62th	v5 (v2026.06.15)
Jun 15, 2026	0.46% (0.00460)	36.18th	v5 (v2026.06.15)
Mar 17, 2025	0.19% (0.00188)	38.39th	v4 (v2025.03.14)
Dec 12, 2024	0.11% (0.00111)	46.10th	v3 (v2023.03.01)
Jan 4, 2024	0.10% (0.00097)	40.21th	v3 (v2023.03.01)
Dec 27, 2023	0.07% (0.00066)	27.56th	v3 (v2023.03.01)

Weaknesses (1)

CWE-601

Open Redirect

References (2)

https://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
https://github.com/passtheticket/vulnerability-research/blob/main/aspnetzero_html_injection_via_websockets_messages.md
ExploitThird Party Advisory

Link	Providers	Tags
https://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
https://github.com/passtheticket/vulnerability-research/blob/main/aspnetzero_html_injection_via_websockets_messages.md		ExploitThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Dec 26, 2023

Updated Aug 2, 2024

Reserved Nov 13, 2023

Link CVE-2023-48003

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2023-48003

Red Hat

Severity n/a

Public date n/a

Links CVE-2023-48003