CVE-2020-35592 json
Pi-hole 5.0, 5.1, and 5.1.1 allows XSS via the Options header to the admin/ URI.
published 2021-02-18 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-23258
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
Pi-hole 5.0, 5.1, and 5.1.1 allows XSS via the Options header to the admin/ URI. A remote user is able to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and achieve a Reflected Cross-Site Scripting attack against other users and steal the session cookie.
Exploit prediction
0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- n4nj0.github.io https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
n4nj0.github.io
/advisories/pi-hole-multiple-vulnerabilities-i/
exploit, third-party-advisory
-
discourse.pi-hole.net
/c/announcements/5
release-notes, vendor-advisory
Sources
- CVE List CVE-2020-35592
- NVD CVE-2020-35592
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