How severe is CVE-2023-48003?

CVE-2023-48003 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-48003 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-48003?

CVE-2023-48003 affects Aspnetzero Asp.net Zero. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-48003?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-48003 published?

CVE-2023-48003 was published on 2023-12-26 and last updated on 2026-06-17.

CVE-2023-48003

CVE-2023-48003 is a medium-severity vulnerability in Aspnetzero Asp.net Zero with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Aspnetzero Asp.net Zero
Published: 2023-12-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-48003?: CVE-2023-48003 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-48003 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-48003?: CVE-2023-48003 affects Aspnetzero Asp.net Zero. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-48003?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-48003 published?: CVE-2023-48003 was published on 2023-12-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:aspnetzero:asp.net_zero:*:*:*:*:*:*:*:*

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