XSS in Pi-Hole
CVE-2020-35659
The DNS query log in Pi-hole before 5.2.2 is vulnerable to stored XSS. An attacker with the ability to directly or indirectly query DNS with a malicious hostname can cause arbitrary JavaScript to execute when the Pi-hole administrator visits the Query Log or Long-term data Query Log page.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.010 (59.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/pi-hole/AdminLTE/pull/1665 (Patch, Third Party Advisory)
- discourse.pi-hole.net/t/pi-hole-core-web-v5-2-2-and-ftl-v5-3-3-released/41998 (Release Notes, Vendor Advisory)
- blog.mirch.io/2020/12/24/pihole-xss/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-35659?
- CVE-2020-35659 is a medium-severity vulnerability in Pi-Hole, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-12-24.
- How severe is CVE-2020-35659?
- Medium severity. CVSS v3 base score is 6.1 out of 10.