How severe is CVE-2023-52263?

CVE-2023-52263 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-2023-52263 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52263?

CVE-2023-52263 affects Brave Browser. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52263?

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

When was CVE-2023-52263 published?

CVE-2023-52263 was published on 2023-12-30 and last updated on 2026-06-17.

CVE-2023-52263

CVE-2023-52263 is a medium-severity vulnerability in Brave Browser 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% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Brave Browser
Published: 2023-12-30
Last modified: 2026-06-17

Description

Brave Browser before 1.59.40 does not properly restrict the schema for WebUI factory and redirect. This is related to browser/brave_content_browser_client.cc and browser/ui/webui/brave_web_ui_controller_factory.cc.

Frequently asked questions

What is CVE-2023-52263?: Brave Browser before 1.59.40 does not properly restrict the schema for WebUI factory and redirect. This is related to browser/brave_content_browser_client.cc and browser/ui/webui/brave_web_ui_controller_factory.cc.
How severe is CVE-2023-52263?: CVE-2023-52263 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-2023-52263 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52263?: CVE-2023-52263 affects Brave Browser. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52263?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-52263 published?: CVE-2023-52263 was published on 2023-12-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:brave:browser:*:*:*:*:*:*:*:*

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