How severe is CVE-2021-41175?

CVE-2021-41175 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-41175 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41175?

CVE-2021-41175 affects Pi-hole Web Interface. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41175?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-41175 published?

CVE-2021-41175 was published on 2021-10-26 and last updated on 2026-06-17.

CVE-2021-41175

CVE-2021-41175 is a high-severity vulnerability in Pi-hole Web Interface with a CVSS 3.x base score of 7.3. 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: High (CVSS 3.x base score 7.3)
CVSS v2: 3.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Pi-hole Web Interface
Published: 2021-10-26
Last modified: 2026-06-17

Description

Pi-hole's Web interface (based on AdminLTE) provides a central location to manage one's Pi-hole and review the statistics generated by FTLDNS. Prior to version 5.8, cross-site scripting is possible when adding a client via the groups-clients management page. This issue was patched in version 5.8.

Frequently asked questions

What is CVE-2021-41175?: Pi-hole's Web interface (based on AdminLTE) provides a central location to manage one's Pi-hole and review the statistics generated by FTLDNS. Prior to version 5.8, cross-site scripting is possible when adding a client via the groups-clients management page. This issue was patched in version 5.8.
How severe is CVE-2021-41175?: CVE-2021-41175 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-41175 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41175?: CVE-2021-41175 affects Pi-hole Web Interface. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41175?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-41175 published?: CVE-2021-41175 was published on 2021-10-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pi-hole:web_interface:*:*:*:*:*:*:*:*

More vulnerabilities in Pi-hole Web Interface

CVE-2026-33765 — Critical (CVSS 9.8): Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking…
CVE-2023-23614 — High (CVSS 8.8): Pi-hole®'s Web interface (based off of AdminLTE) provides a central location to manage your Pi-hole. Versions 4.0 and…
CVE-2025-59151 — High (CVSS 8.2): Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level advertisement and internet tracker…
CVE-2021-29448 — High (CVSS 7.6): Pi-hole is a Linux network-level advertisement and Internet tracker blocking application. The Stored XSS exists in the…
CVE-2021-3706 — High (CVSS 7.5): adminlte is vulnerable to Sensitive Cookie Without 'HttpOnly' Flag
CVE-2026-33403 — Medium (CVSS 6.1): Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking…

All CVEs affecting Pi-hole Web Interface →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →