CVE-2025-53533
CVE-2025-53533 is a medium-severity vulnerability in Pi-hole Web Interface 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v4: 5.1
- EPSS exploit prediction: 1% (43rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-36367
- Weakness: CWE-79
- Affected product: Pi-hole Web Interface
- Published:
- Last modified:
Description
Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level advertisement and internet tracker blocking application. Pi-hole Admin Interface versions 6.2.1 and earlier are vulnerable to reflected cross-site scripting (XSS) via a malformed URL path. The 404 error page includes the requested path in the class attribute of the body tag without proper sanitization or escaping. An attacker can craft a URL containing an onload attribute that will execute arbitrary JavaScript code in the browser when a victim visits the malicious link. If an attacker sends a crafted pi-hole link to a victim and the victim visits it, attacker-controlled JavaScript code is executed in the browser of the victim. This has been patched in version 6.3.
Frequently asked questions
- What is CVE-2025-53533?
- Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level advertisement and internet tracker blocking application. Pi-hole Admin Interface versions 6.2.1 and earlier are vulnerable to reflected cross-site scripting (XSS) via a malformed URL path. The 404 error page includes the requested path in the class attribute of the body tag without proper sanitization or escaping. An attacker can craft a URL containing an onload attribute that will execute arbitrary JavaScript code in the browser when a victim visits the malicious link. If an attacker sends a crafted pi-hole link to a victim and the victim visits it, attacker-controlled JavaScript code is executed in the browser of the victim. This has been patched in version 6.3.
- How severe is CVE-2025-53533?
- CVE-2025-53533 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-2025-53533 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-53533?
- CVE-2025-53533 affects Pi-hole Web Interface. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-53533?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-53533 have an EU (EUVD) identifier?
- Yes. CVE-2025-53533 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-36367.
- When was CVE-2025-53533 published?
- CVE-2025-53533 was published on 2025-10-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*
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