What is CVE-2026-26953?

CVE-2026-26953 is a medium-severity vulnerability in Pi-hole Web, classified under Improper Input Validation. CVSS score: 5.4/10. Published 2026-02-19.

How severe is CVE-2026-26953?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Pi-hole Web

CVE-2026-26953

Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking application. Versions 6.0 and above have a Stored HTML Injection vulnerability in the active sessions table located on the A…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (17.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Pi-hole Web — versions < 6.4.1

Weakness classification (CWE)

References

https://github.com/pi-hole/web/security/advisories/GHSA-8rw8-vjgp-rwj6 (x_refsource_CONFIRM)
https://github.com/pi-hole/web/commit/1a0c6f4fe6d0116fd2846b2adaae95996b7f194d (x_refsource_MISC)
https://github.com/pi-hole/web/releases/tag/v6.4.1 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-26953?: CVE-2026-26953 is a medium-severity vulnerability in Pi-hole Web, classified under Improper Input Validation. CVSS score: 5.4/10. Published 2026-02-19.
How severe is CVE-2026-26953?: Medium severity. CVSS v3 base score is 5.4 out of 10.