CVE-2021-32793
Prior to Pi-hole Web interface version 5.5.1, the function to add domains to blocklists or allowlists is vulnerable to a stored cross-site-scripting vulnerability.
Does this matter?
Lower severity and a low EPSS score (0.79%). Track it; it rarely justifies an emergency change on its own.
Description
Pi-hole's Web interface provides a central location to manage a Pi-hole instance and review performance statistics. Prior to Pi-hole Web interface version 5.5.1, the function to add domains to blocklists or allowlists is vulnerable to a stored cross-site-scripting vulnerability. User input added as a wildcard domain to a blocklist or allowlist is unfiltered in the web interface. Since the payload is stored permanently as a wildcard domain, this is a persistent XSS vulnerability. A remote attacker can therefore attack administrative user accounts through client-side attacks. Pi-hole Web Interface version 5.5.1 contains a patch for this vulnerability.
- CVSS 3.1
- 4.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.79% probability · 54th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- pi-hole/pi-hole
- Source
- security-advisories@github.com
References
- https://github.com/pi-hole/AdminLTE/releases/tag/v5.5.1Release Notes, Third Party Advisory
- https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-g3w6-q4fg-p8x8Exploit, Third Party Advisory
- https://github.com/pi-hole/AdminLTE/releases/tag/v5.5.1Release Notes, Third Party Advisory
- https://github.com/pi-hole/AdminLTE/security/advisories/GHSA-g3w6-q4fg-p8x8Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.