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CVE-2025-59151

Pi-hole Web Interface vulnerability

8.2 HIGHPublic exploitEPSS 0.44%
  1. Published27 Oct 2025

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 before 6.3 is vulnerable to Carriage Return Line Feed (CRLF) injection. When a request is made to a file ending with the .lp extension, the application performs a redirect without properly sanitizing the input. An attacker can inject carriage return and line feed characters (%0d%0a) to manipulate both the headers and the content of the HTTP response. This enables the injection of arbitrary HTTP response headers, potentially leading to session fixation, cache poisoning, and the weakening or bypassing of browser-based security mechanisms such as Content Security Policy or X-XSS-Protection. This vulnerability is fixed in 6.3.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Affected products

Pi-hole Web Interface< 6.3

Remediation

Fixed in
Pi-hole Web Interface≥ 6.3

References

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Frequently asked

Is CVE-2025-59151 being actively exploited?

CVE-2025-59151 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.44%.

How severe is CVE-2025-59151?

CVE-2025-59151 has a CVSS 3.1 base score of 8.2, rated high. EPSS estimates a 0.44% probability of exploitation.

Which products are affected by CVE-2025-59151?

Affected products include Pi-hole Web Interface.

How do I fix CVE-2025-59151?

Upgrade affected software to a fixed version, for example Pi-hole Web Interface 6.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-59151 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.